CFR Series Fan-Powered, VAV Terminals, Catalog, ET130.13 ... - HTS

catalog 

CFR Series 

Fan-Powered, VAV Terminals

Catalog: ET130.13-EG4 (1009) 

TABLE OF CONTENTS 

Series Fan-Powered, VAV Terminals 

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . 2 

Construction Features . . . . . . . . . . . . . . . . . . . . . . . 4 

Standard and Optional Features . . . . . . . . . . . . . . . 6 

Application and Selection. . . . . . . . . . . . . . . . . . . . . 7 

Primary Airflow Calibration . . . . . . . . . . . . . . . . . . . 10 

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . 11 

General Selection Data, PSC Motor . . . . . . . . . . . 13 

Sound Power Data . . . . . . . . . . . . . . . . . . . . . . . . . 15 

Fan Performance, PSC Motor . . . . . . . . . . . . . . . . 17 

ECM Fan Motor Option. . . . . . . . . . . . . . . . . . . . 19 

General Selection, ECM Motor. . . . . . . . . . . . . . 20 

Fan Performance, ECM Motor . . . . . . . . . . . . . . 21 

ARI Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 

Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 

Hot Water Coil Data . . . . . . . . . . . . . . . . . . . . . . . . 24 

Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . 31 

NOTES: 

• All data herein is subject to change without 

notice. Some drawings are not shown in this 

catalog. 

• Drawings not for installation purposes. 

• Construction drawings and performance data 

contained herein should not be used for submittal 

purposes. 

• ETL Report Number 476203. 

FEATURES AND BENEFITS 

QUIET, EFFICIENT COMFORT 

Model CFR fan terminals are specifically designed for 

quiet operation. They also offer improved space comfort 

and flexibility for a wide variety of HV AC systems. 

This is critical in today’s buildings, where occupants are 

placing more emphasis on indoor acoustics. 

OCCUPANT-SENSITIVE DESIGN 

Due to heightened interest in Indoor Air Quality, many 

HVAC system designers are focusing on the effects of 

particulate contamination within a building’ s occupied 

space. Often, HVAC system noise is overlooked as a 

source of occupied space contamination. The CFR 

terminal is specifically designed to eliminate obtrusive 

fan noise from reaching the occupants, while providing 

constant air motion in the space. 

Occupants will benefit from the CFR design that minimizes 

low frequency (125Hz-250Hz) sound levels that 

typically dominate the space sound level. The CFR 

also minimizes the fluctuation in sound levels that occur 

during VAV damper modulation. 

FLEXIBILITY 

Selection and Layout. The CFR provides flexibility in 

system design. Reduced noise at the fan terminal 

allows the system designer to place properly sized units 

directly above occupied spaces. It is not necessary to 

use the crowded space above a hall or corridor to locate 

the equipment. This will reduce lengthy and expensive 

discharge duct runs. The standard shallow casing 

height (14" up to 1000 CFM) minimizes conflict with 

other systems competing for ceiling space. The 

FlowStar sensor ensures accurate control, even 

when space constraints do not permit long straight inlet 

duct runs to the terminal. 

Sizes. Model CFR terminals are available in nine fan 

sizes to handle airflow capacities between 100 and 4800 

CFM. Most fan sizes are available with three primary 

air valve sizes to optimize the unit fan and primary air 

valve combinations required by current industry needs. 

A Windows ® based Computer Selection Program is 

available on CD-ROM to facilitate the selection process. 

Contact your ENVIRO-TEC ® representative to obtain a 

copy of this powerful and time-saving program. 

CONVENIENCE 

Quality. All CFR terminals are thoroughly inspected 

during each step of the manufacturing process, including 

a comprehensive “pre-ship” inspection, to assure 

the highest quality product available. Each unit is also 

“run tested” before leaving the factory to ensure trouble 

free field “start-up.” 

Quick Installation. A standard single point electrical 

main power connection is provided. Electronic controls 

and electrical components are located on the same side 

of the casing for quick access, adjustment, and trouble- 

2 ENVIRO-TEC

Series Fan-Powered, VAV Terminals Catalog: ET130.13-EG4 (1009) 

FEATURES AND BENEFITS 

shooting. Installation time is minimized with the availability 

of factory calibrated controls. 

Finite fan speed adjustment is accomplished with an 

electronic SCR controller. The SCR fan speed controller 

is manufactured by ENVIRO-TEC ® and is compatible 

with the fan motor. This minimizes electronic interference 

and harmonic distortion that occurs from non-compatible 

motor and SCR components. Increased motor life and 

efficiency result from the compatible design. 

CFR terminals utilize three tap motors that accommodate 

a broad range of flow and static pressure field 

conditions while dramatically increasing efficiency. 

The FlowStar sensor ensures accurate airflow measurement, 

regardless of the field installation conditions. 

A calibration label and wiring diagram is located on the 

terminal for quick reference during start-up. 

The terminal is constructed to allow installation with 

standard metal hanging straps. Optional hanger brackets 

for use with all-thread support rods or wire hangers 

are also available. 

VALUE AND SECURITY 

Quality. All metal components are fabricated from 

galvanized steel. Unlike most manufacturers’terminals, 

the steel used in the CFR is capable of withstanding a 

125 hour salt spray test without showing any evidence 

of red rust. 

Energy Efficiency. In addition to quiet and accurate 

temperature control, the building owner will benefit from 

lower operating costs. The highly amplified velocity 

pressure signal from the FlowStar inlet sensor allows 

precise airflow control at low air velocities. 

The FlowStar sensor’s airfoil shape provides minimal 

pressure drop across the terminal. This allows the 

central fan to run at a lower pressure and with less 

brake horsepower . Energy ef ficient three tap, three 

winding, permanent split capacitor fan motors are 

manufactured to ensure ef ficient, quiet, reliable, and 

low maintenance operation. 

Three tap motors provide superior energy ef ficiency 

over single speed motors by delivering three separate 

horsepower outputs. For example, a nominal 1/2 HP 

motor delivers 1/3 HP on medium tap and 1/4 HP on 

low tap. This allows the motor to operate at a higher 

efficiency when at a reduced fan capacity. 

Fan terminals that utilize a single speed motor must 

rely solely on an SCR controller to obtain the reduction 

in fan capacity. At minimum turndown, they sufer from 

excessive power consumption and high motor winding 

temperatures, significantly reducing the motor life. 

As an option, Model CFR is available with an ECM 

fan motor, providing ef ficiency ratings between 70% 

and 80% for most applications. 

Agency Certification. Model CFR terminals, including 

those with electric heat, are listed with ETL as an 

assembly, and bear the ETL label. 

CFR terminals comply with applicable NEC requirements, 

are tested in accordance with ARI Standard 880, 

and are certified by ARI. 

Maintenance and Service. CFR fan terminals require 

no periodic maintenance other than optional filter 

replacement. If component replacement becomes necessary, 

the unit is designed to minimize field labor. The 

bottom casing panels can be removed to provide easy 

access to the fan assembly , and the motor electrical 

leads are easily unplugged. 

Controls. Model CFR terminals are available with 

analog electronic, consignment DDC, and pneumatic 

controls. ENVIRO-TEC ® manufactures a complete line 

of analog electronic controls specifically designed for 

use with CFR terminals. These controls are designed 

to accommodate a multitude of control schemes. 

From the most basic to the most sophisticated 

sequence of operation, the controls are designed by 

experts in VAV terminal operation. Refer to the Electronic 

Controls Selection Guide, and the Pneumatic Controls 

Selection Guide for a complete description of the 

sequences and schematic drawings that are 

available. 

Standard features include the patented FlowStar 

airflow sensor, ETL Listing, NEMA 1 enclosure, 24 volt 

control transformer, floating modulating actuator, balancing 

tees and plenum rated tubing. 

ENVIRO-TEC 3


CONSTRUCTION FEATURES 


MODEL CFR 

The CFR terminal incorporates many unique features. Most of these standard features are expensive 

options for other manufacturers. 

Integral discharge collar 

simplifies field installation 

Electrical devices 

installed within a 

NEMA 1enclosure, 

with single point 

power connection 

Fan assembly utilizes a forward curved, 

dynamically balanced, galvanized wheel 

with a direct drive motor 

Mechanical lock construction 

ensures lowest possible 

casing leakage 

All unit configurations 

listed with ETL for 

safety compliance 

Galvanized steel casing withstands 125 hour 

salt spray test per ASTM B-117 

Product label includes 

tagging, airflow, and 

electrical information 

Mechanically fastened 

insulation for added 

security 

Full bottom removable 

access panels 

Low leakage damper incorporates closed 

cell foam gasket 

Roll formed inlet collar with integral 

stiffening ribs adds strength and rigidity 

3/4" thick fiberglass 

insulation complying 

with UL 181, NFPA 90A, 

and ASTM C1071 

Patented FlowStar TM airflow sensor 

(Patent #5,481,925) 

OPTIONAL CONSTRUCTION FEATURES 

• ECM fan motor 

• Mounting brackets to accept all-thread hanging rods or wire hangers 

• Double wall construction 

• Scrim reinforced foil faced insulation meeting ASTM C1136 for mold, mildew, and humidity resistance 

• Elastomeric closed cell foam insulation 

• Filter located at induction inlet 

• Hot water (CFR-WC), steam, or electric heating coils (CFR-EH) mounted at unit discharge. Access plate 

upstream of hydronic coil is standard. 

• Low temperature construction for use in thermal storage applications. Includes thermally isolated primary air 

inlet and composite damper shaft. 

• Factory control options: analog electronic, DDC electronic, pneumatic 

• Factory piping packages 

• Induction inlet gravity damper reduces radiated NC level by up to 2 NC at full cooling condition. 

4 ENVIRO-TEC


CONSTRUCTION FEATURES 

ACCURATE AND ENERGY-SAVING AIRFLOW CONTROL 

WITH THE PATENTED FLOWSTAR SENSOR 

Many VAV terminals waste energy due to an inferior 

airflow sensor design that requires the minimum CFM 

setpoint to be much higher than the IAQ calculation 

requirement. This is common with interior spaces that 

airflow sensor reduces energy consumption by allowing 

lower zone minimum CFM setpoints, greatly reducing 

or eliminating “reheat”, and by imposing less resistance 

on the primary air fan. 

will be effected year round. These interior VAV terminals 

The ENVIRO-TEC ® air valve features the FlowStar 

waste energy in several ways. First, the primary air fan 

airflow sensor which has brought new meaning to airflow 

(e.g. AHU) supplies more CFM than the building requires. 

control accuracy. The multi-axis design utilizes between 

The higher minimum CFM setpoint overcools the zone 

12 and 20 sensing points that sample total 

with VAV terminals without integral heat. To maintain 

pressure at center points within equal concentric crossthermal 

comfort a building engineer would need to 

sectional areas, effectively traversing the air stream in 

change the minimum setpoint to zero CFM compromising 

indoor air quality. Interior VAV terminals with integral 

two planes. Each distinct pressure reading is averaged 

within the center chamber before exiting the sensor to 

heat provide adequate comfort in the space but waste 

the controlling device. 

significant energy as energy is consumed to mechanically 

cool the primary air only to have more energy 

consumed to heat the cooled primary air . Significant 

energy savings is obtained with proper sizing and by 

making sure approved V AV terminals are capable of 

controlling at low CFM setpoints, providing the minimum 

ventilation requirement. 

This sensor adds a new dimension to signal amplification. 

Most differential pressure sensors provide a signal 

between .5 and 2 times the equivalent velocity 

pressure signal. The FlowStar provides a differential 

pressure signal that is 2.5 to 3 times the equivalent 

velocity pressure signal. This amplified signal allows 

more accurate and stable airflow control at low airflow 

Currently, most DDC controllers have a minimum dif ferential 

pressure limitation between 0.015" and 0.05" w .g. 

capacities. Low airflow control is critical for indoor air 

quality, reheat minimization, and preventing over cooling 

The major DDC manufacturers can control down to 0.015" 

during light loads. 

w.g. An airflow sensor that does not amplify, e.g., a Pitot 

tube, requires about 490 FPM to develop 0.015" w .g. Unlike other sensors which use a large probe surface 

differential pressure. The FlowStar TM develops 0.015" area to achieve signal amplification, the FlowStar 

w.g. pressure with only 290 FPM on a size 6 terminal and utilizes an unprecedented streamline design which 

less than 325 FPM for a size 16. Consequently , VAV generates amplified signals unrivaled in the industry . 

terminals utilizing a non-amplifying type sensor could 

have minimum CFM's that are well over 50% higher than 

The streamlined design also generates less pressure 

drop and noise. 

an ENVIRO-TEC ® terminal. Many airflow sensors provide The V AV schedule should specify the minimum and 

some degree of amplification simply due to the decrease maximum airflow setpoints, maximum sound power 

in free area of the inlet from large area of the sensor . levels, and maximum air pressure loss for each terminal. 

These VAV terminals still require minimum CFM's up to The specification for the V AV terminal must detail the 

30% higher than an ENVIRO-TEC ® terminal, have higher 

sound levels, and higher pressure drop requiring mum building occupant satisfaction, the V AV system 

required performance of the airflow sensor . For maxi- 

additional energy consumption at the primary air fan. designer should specify the airflow sensor as suggested 

A VAV system designed with ENVIRO-TEC ® terminals 

consumes significantly less energy than a comparable 

system with competitor's terminals. The FlowStar TM 

in the Guide Specifications of this catalog. 

FlowStar Airflow Sensor Patent #5,481,925 

Each pressure input signal is routed 

to the center averaging chamber 

Equal concentric circular areas 

Sizes 6 & 8: 3 Circles 

Sizes 10 & 12: 4 Circles 

Sizes 14 & 16: 5 Circles (shown) 

Total pressure measured at the center 

of each concentric circle for maximum 

accuracy, as outlined in ASHRAE 

Fundamentals Handbook. 

Sizes 6 & 8: 12 Sensing Points 



Field pressure 

measuring tap 

Airfoil shaped 

averaging 

chamber for low 

pressure loss 

and noise 

Pressure output is 

routed behind 

probe to minimize 

pressure loss 

and noise 

ENVIRO-TEC 5


STANDARD AND OPTIONAL FEATURES 


STANDARD FEATURES 

Construction 

• ARI 880 certified and labeled 

• 22 gauge galvanized steel casing and valve 

• 3/4" thick fiberglass insulation 

• Large access openings allowing removal of complete 

fan assembly for all heating coil options 

Fan Assembly 

• Forward curved, dynamically balanced, direct drive, 

galvanized fan wheel 

• 115 or 277 volt single phase, three tap PSC motor 

• SCR fan speed controller 

• Quick-select motor speed terminal 

• Permanently lubricated motor bearings 

• Thermally protected motor 

• Vibration isolation motor mounts 

• Single point wiring 

Primary Air Valve 

• Embossed rigidity rings 

• Low thermal conductance damper shaft 

• Position indicator on end of damper shaft 

• Mechanical stops for open and closed position 

• FlowStar center averaging airflow sensor 

• Balancing tees 

• Plenum rated sensor tubing 

Hot Water Coils 

• ENVIRO-TEC ® coils are designed, manufactured, 

and tested by Johnson Controls 

• 1, 2, 3, 4 row coils 

• Tested at a minimum of 450 PSIG under water and 

rated at 300 PSIG working pressure at 200°F 

• Left or right hand connections 

Electrical 

• cETL listed for safety compliance 

• NEMA 1 wiring enclosure 

Electric Heat 

• ETL listed as an assembly for safety compliance 

per UL 1995 

• Integral electric heat assembly 

• Automatic reset primary and back-up secondary 

thermal limits 

• Single point power connection 

• Hinged electrical enclosure door 

• Fusing per NEC 

OPTIONAL FEATURES 

Construction 

• 20 gauge galvanized steel construction 

• 1" insulation 

• Foil faced scrim backed insulation 

• 1/2" thick elastomeric closed cell foam insulation 

• Double wall construction with 22 gauge liner 

• 1" throwaway filter 

Fan Assembly 

• 208-230 volt PSC motor 

• 220-240 volt 50 Hz motor 

• 120, 208, 240 and 277 volt ECM motors 

Electrical 

• Full unit toggle disconnect 

• Inline motor fusing 

• Primary and secondary transformer fusing 

Electric Heat 

• Proportional (SSR) heater control 

• Mercury contactors 

• Door interlocking disconnect switches 

Controls 

• Factory provided controls include: 

- Analog electronic 

- Pneumatic 

• Consignment DDC controls (factory mount and wire 

controls provided by others) 

Piping Packages 

• Factory assembled – shipped loose for field installation 

• 1/2" and 3/4", 2 way, normally closed, 

two position electric motorized valves 

• Isolation ball valves with memory stop 

• Fixed and adjustable flow control devices 

• Unions and P/T ports 

• Floating point modulating control valves 

• High pressure close-off actuators 

(1/2" = 50 PSIG; 3/4" = 25 PSIG) 

6 ENVIRO-TEC


APPLICATION AND SELECTION 

PURPOSE OF SERIES FLOW FAN TERMINALS 

Series flow fan powered terminals ofer improved space 

comfort and flexibility in a wide variety of applications. 

Substantial operating savings can be realized through 

the recovery of waste heat, reduced central fan horsepower 

requirements and night setback operation. 

Heat Recovery. The CFR recovers heat from lights and 

core areas to of fset heating loads in perimeter zones. 

Additional heat is available at the terminal unit using 

electric, steam, or hot water heating coils. Controls are 

available to energize remote heating devices such as 

wall fin, fan coils, radiant panels, and roof load plenum 

unit heaters. 

IAQ. The CFR enhances the indoor air quality of a building 

by providing constant air motion, and higher air 

volumes in the heating mode than typically provided by 

straight V AV single duct terminals or parallel flow fan 

terminals. The higher air capacity provides continuous air 

motion in the space and lowers the heating discharge air 

temperature. This combination improves air circulation, 

preventing accumulation of CO 2 concentrations in stagnant 

areas. Increased air motion improves occupant 

comfort. The higher air capacity also improves the performance 

of diffusers and minimizes diffuser “dumping”. 

ACOUSTICAL CONCEPTS 

The focus on indoor air quality is also having an ef fect 

on proper selection of air terminal equipment with 

respect to acoustics. 

Sound. At the zone level, the terminal unit generates 

acoustical energy that can enter the zone along two 

primary paths. First, sound from the unit fan can propagate 

through the downstream duct and difusers before 

entering the zone (referred to as Discharge or Airborne 

Sound). Acoustical energy is also radiated from the 

terminal casing and travels through the ceiling cavity 

and ceiling system before entering the zone (referred to 

as Radiated Sound). 

To properly quantify the amount of acoustical energy 

emanating from a terminal unit at a specific operating 

condition (i.e. CFM and static pressure), manufacturers 

must measure and publish sound power levels. 

The units of measurement, decibels, actually represent 

units of power (watts). The terminal equipment sound 

power ratings provide a consistent measure of the generated 

sound independent of the environment in which 

the unit is installed. This allows a straight forward comparison 

of sound performance between equipment 

manufacturers and unit models. 

Noise Criteria (NC). The bottom line acoustical criteria 

for most projects is the NC (Noise Criteria) level. This 

NC level is derived from resulting sound pressure levels 

in the zone. These sound pressure levels are the efect 

of acoustical energy (sound power levels) 

entering the zone caused by the terminal unit and other 

sound generating sources (central fan system, of fice 

equipment, outdoor environment, etc.). 

The units of measurement is once again decibels; however, 

in this case decibels represent units of pressure 

(Pascals), since the human ear and microphones react 

to pressure variations. 

There is no direct relationship between sound power 

levels and sound pressure levels. Therefore, we must 

predict the resulting sound pressure levels (NC levels) 

in the zone based in part by the published sound power 

levels of the terminal equipment. The NC levels are 

totally dependent on the project specific design, architecturally 

and mechanically. For a constant operating 

condition (fixed sound power levels), the resulting NC 

level in the zone will vary from one project to another . 

ARI 885. A useful tool to aid in predicting space sound 

pressure levels is an application standard referred to as 

ARI Standard 885. This standard provides information 

(tables, formulas, etc.) required to calculate the attenuation 

of the ductwork, ceiling cavity, ceiling system, and 

conditioned space below a terminal unit. These attenuation 

values are referred to as the “transfer function” 

since they are used to transfer from the manufacturer’s 

sound power levels to the estimated sound pressure 

levels resulting in the space below, and/or served by the 

terminal unit. The standard does not provide all of the 

necessary information to accommodate every conceivable 

design; however, it does provide enough information 

to approximate the transfer function for most applications. 

Furthermore, an Appendix is provided that contains 

typical attenuation values. Some manufacturers utilize 

different assumptions with respect to a "typical" project 

design; therefore, cataloged NC levels should not be 

used to compare acoustical performance. Only certified 

sound power levels should be used for this purpose. 

GENERAL DESIGN RECOMMENDATIONS FOR 

A QUIET SYSTEM 

The AHU. Sound levels in the zone are frequently 

impacted by central fan discharge noise that either 

breaks out (radiates) from the ductwork or travels 

through the distribution ductwork and enters the zone 

as airborne (discharge) sound. Achieving acceptable 

sound levels in the zone begins with a properly designed 

central fan system which delivers relatively quiet air to 

each zone. 

ENVIRO-TEC 7




Supply Duct Pressure. One primary factor contributing 

to noisy systems is high static pressure in the primary 

air duct. This condition causes higher sound levels from 

the central fan and also higher sound levels from the 

terminal unit, as the primary air valve closes to reduce 

the pressure. This condition is compounded when flexible 

duct is utilized at the terminal inlet, which allows the 

central fan noise and air valve noise to break out into 

the ceiling cavity and then enter the zone located below 

the terminal. Ideally, the system static pressure should 

be reduced to the point where the terminal unit installed 

on the duct run associated with the highest pressure 

drop has the minimum required inlet pressure to deliver 

the design airflow to the zone. Many of today’ s HVAC 

systems experience 0.5" w .g. pressure drop or less in 

the main trunk. For systems that will have substantially 

higher pressure variances from one zone to 

another, special attention should be paid to the proper 

selection of air terminal equipment. 

To date, the most common approach has been to select 

(size) all of the terminals based on the worst case (highest 

inlet static pressure) condition. Typically, this results 

in 80% (or higher) of the terminal units being oversized 

for their application. This in turn results in much higher 

equipment costs, but more importantly , drastically 

reduced operating efficiency of each unit. This consequently 

decreases the ability to provide comfort control 

in the zone. In addition, the oversized terminals cannot 

adequately control the minimum ventilation capacity 

required in the heating mode. 

A more prudent approach is to utilize a pressure reducing 

device upstream of the terminal unit on those few 

zones closest to the central fan. This device could 

simply be a manual quadrant type damper if located well 

upstream of the terminal inlet. In tight quarters, perforated 

metal can be utilized as a quiet means of reducing 

system pressure. This approach allows all of the terminal 

units to experience a similar (lower) inlet pressure. 

They can be selected in a consistent manner at lower 

inlet pressure conditions that will allow more optimally 

sized units. 

possible, the first diffuser takeoff should be located after 

an elbow or tee and a greater number of small necked 

diffusers should be utilized, rather than fewer large 

necked diffusers. 

The downstream ductwork should be carefully designed 

and installed to avoid noise regeneration. Bull head tee 

arrangements should be located suficiently downstream 

of the terminal discharge to provide an established flow 

pattern downstream of the fan. Place dif fusers downstream 

of the terminal after the airflow has completely 

developed. 

Downstream splitter dampers can cause noise problems 

if placed too close to the terminal, or when excessive air 

velocities exist. If tee arrangements are employed, 

volume dampers should be used in each branch of the 

tee, and balancing dampers should be provided at each 

diffuser tap. This arrangement provides maximum flexibility 

in quiet balancing of the system. Casing radiated 

sound usually dictates the overall room sound levels 

directly below the terminal. Because of this, special consideration 

should be given to the location of these 

terminals as well as to the size of the zone. Larger zones 

should have the terminal located over a corridor or open 

plan office space and not over a small confined private 

office. Fan powered terminals should never be installed 

over small occupied spaces where the wall partitions 

extend from slab-to-slab (i.e. fire walls or privacy walls). 

Fan Terminal Isolation. Model CFR fan terminals are 

equipped with suf ficient internal vibration dampening 

means to prevent the need for additional external 

isolation. Flexible duct connectors at the unit discharge 

typically do more harm than good. The sagging 

membrane causes higher air velocities and turbulence, 

which translates into noise. Furthermore, the discharge 

noise breaks out of this fitting more than with a hard 

sheet metal fitting. 

IDEAL DUCT DESIGN 

Inlet duct that is the same size as the inlet collar and as 

straight as possible will achieve the best acoustical 

performance. For critical applications, flexible duct 

should not be utilized at the terminal inlet. 

Zoning. On projects where internal lining of the downstream 

duct is not permitted, special considerations 

should be made to assure acceptable noise levels will 

be obtained. In these cases, a greater number of 

smaller zones will help in reducing sound levels. Where 

High Quality 

VAV Terminal 

with Low 

Sound Levels 

Minimum 

Required 

Inlet Static 

Pressure 

Small Necked Diffusers 

Multiple 

Branch 

Take-Offs 

Short Length of 

Non-Metallic Flexible Duct 

Damper 

Located at 

Take-Off 

8 ENVIRO-TEC



SELECTION GUIDELINES 

The CFR fan terminal has been designed to provide 

maximum flexibility in matching primary air valve capacities 

(cooling loads) with unit fan capacities. The overall 

unit size is dictated by the fan size. With each unit fan 

size, multiple primary air valve sizes are available to 

handle a wide range of cooling capacities. 

The fan should be sized first to determine the unit size. 

The selection is made by cross plotting the specified fan 

capacity and external static pressure on the appropriate 

fan performance curves (see page 17). Terminals utilizing 

hot water heating coils require the summation of the 

coil air pressure drop and the design E.S.P. to determine 

the total E.S.P. It is common to have more than one 

fan size which can meet the design requirements. 

Typically, the selection begins with the smallest fan that 

can meet the capacity. Occasionally this selection may 

not meet the acoustical requirements and thus the next 

larger fan size should be selected. “Upsizing” may also 

occur when it is necessary to meet the design capacity 

on the medium or low motor tap. 

Fan selections can be made anywhere in the nonshaded 

areas. Each fan performance curve depicts the 

actual performance of the relative motor tap without 

additional fan balance adjustment. Actual specified 

capacities which fall below a particular fan curve (low , 

medium or high) is obtained by adjustment of the electronic 

(SCR) fan speed controller . After the proper fan 

is selected, the unit size is fixed and then the appropriate 

primary air valve is selected. Most of the unit fan 

sizes have three air valve sizes to select from. The 

middle size will typically be utilized. It is the size that is 

matched with the unit fan to deliver 100% cooling capacity 

for the majority of fan selections. 

The larger primary air valve will be used in applications 

where the system fan is undersized, requiring a larger 

air valve to take advantage of lower pressure losses. 

While helping in this fashion, a penalty is paid by having 

a higher controllable minimum airflow setpoint than 

could be achieved with a smaller inlet size. 

The smaller primary air valve will most often be utilized 

with thermal storage systems where lower than normal 

primary air temperatures are utilized. In these cases, 

the maximum design primary airflow is less than the fan 

capacity (typically 60 to 80%), and therefore a smaller 

air valve may be appropriate. 

SYSTEM PRESSURE CONSIDERATIONS 

Since the terminal unit fan is selected to move 100% of 

the design airflow to the zone, all downstream pressure 

losses are neglected when determining minimum primary 

air inlet pressure to the unit. The central fan is only 

required to overcome the minimal loss through the unit 

air valve, reducing the central fan total pressure and 

horsepower requirements. Due to extremely low pressure 

drop of the air valve, central fan operating inlet 

static pressures may be as low as 0.5" w .g. 

COMMON MISAPPLICATION 

It should be noted that a conventional Series Flow Fan 

Terminal cannot be applied as a booster fan. In problem 

areas where there is insufficient primary airflow capacity, 

this terminal will not aid in pulling more air from the 

primary duct. Instead the unit fan will draw air from the 

plenum inlet which has less resistance. 

The induction opening should never be sealed, as this 

will cause problems should the primary airflow increase 

beyond the unit fan capacity. In this condition, the fan 

casing becomes pressurized which will eventually stall 

the fan motor and cause premature failure. 

A Windows ® based Computer Selection Program is also 

available for complete CFR automated selection. 

ENVIRO-TEC 9


PRIMARY AIRFLOW CALIBRATION 


FLOWSTAR CALIBRATION CHART 

(For dead-end differential pressure transducers) 

NOTE: Maximum and minimum CFM limits are dependent on the type of controls that are utilized. Refer to the table below for 

specific values. When DDC controls are furnished by others, the CFM limits are dependent on the specific control vendor that 

is employed. After obtaining the differential pressure range from the control vendor, the maximum and minimum CFM limits can 

be obtained from the chart above (many controllers are capable of controlling minimum setpoint down to .015" w .g.). 

UNIT SIZE 

400 SERIES (PNEUMATIC) 

STANDARD CONTROLLER 

AIRFLOW RANGES (CFM) 

MIN. MAX. MIN. 

7000 SERIES ANALOG 

ELECTRONIC 

(in. w.g.) 

(in. w.g.) 

.015 .03 .05 1.0 > 1.5 

0404 43 250 35 250 30 43 55 250 250 

0504, 0506 68 350 50 350 48 68 88 350 350 

0604, 0606, 0611 75 490 60 550 53 75 97 435 530 

0806, 0811, 0818 145 960 115 1000 105 145 190 840 1000 

1011, 1018, 1021 235 1545 185 1600 165 235 305 1355 1600 

1218, 1221, 1224, 1230 340 2250 285 2300 240 340 440 1975 2300 

1421, 1424, 1430 475 3100 390 3100 335 475 615 2750 3100 

1630, 1640, 1644 625 4100 520 4100 440 625 805 3595 4100 

1844 810 4600 640 4600 580 810 1040 4470 4600 

10 ENVIRO-TEC 

MAX. 

DDC CONSIGNMENT CONTROLS 

(See Notes Below) 

MIN. 

Min. transducer 

differential pressure 

MAX. 

Max. transducer 

differential pressure 

1 

Minimum and maximum airflow limits are dependent on the specific DDC controller supplied. Contact the control vendor to 

obtain the minimum and maximum differential pressure limits (inches W.G.) of the transducer utilized with the DDC controller . 

2 

Maximum CFM is limited to value shown in General Selection Data.


DIMENSIONAL DATA 

MODEL CFR 

Drawings are not to scale and not for submittal or installation purposes. 

UNIT 

SIZE 

0404 

0504 

0604 

0506 

0606 

0806 

0611 

0811 

1011 

0818 

1018 

1218 

1021 

1221 

1421 

1224 

1424 

1230 

1430 

1630 

1440 

1640 

1644 

I A B C D X Y W H L 

3 7/8 

[98] 

4 7/8 

[124] 

5 7/8 

[149] 

4 7/8 

[124] 

5 7/8 

[149] 

7 7/8 

[251] 

5 7/8 

[149] 

7 7/8 

[200] 

9 7/8 

[251] 

7 7/8 

[200] 

9 7/8 

[251] 

11 7/8 

[302] 

9 7/8 

[251] 

11 7/8 

[302] 

13 7/8 

[352] 

11 7/8 

[302] 

13 7/8 

[352] 

11 7/8 

[302] 

13 7/8 

[352] 

15 7/8 

[403] 

13 7/8 

[352] 

15 7/8 

[403] 

15 7/8 

[403] 

6 

[152] 

6 

[152] 

6 

[152] 

6 

[152] 

6 

[152] 

6 

[152] 

6 

[152] 

6 

[152] 

7 [178] 

8 [203] 

8 [203] 

8 [203] 

8 [203] 

8 [203] 

9 [229] 

10 

[254] 

10 

[254] 

10 

[254] 

11 1/2 

[292] 

11 1/2 

[292] 

11 1/2 

[292] 

11 1/2 

[292] 

11 1/2 

[292] 

5 [127] 

5 [127] 

5 [127] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

2 1/4 

[57] 

9 3/4 

[248] 

9 3/4 

[248] 

9 3/4 

[248] 

9 3/4 

[248] 

9 3/4 

[248] 

9 3/4 

[248] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

3/4 

[19] 

1 1/4 

[32] 

1 1/4 

[32] 

1 1/4 

[32] 

1 1/4 

[32] 

1 1/4 

[32] 

3 1/4 

[83] 

10 1/2 

[267] 

10 1/2 

[267] 

6 1/2 

[165] 

10 1/2 

[267] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

6 1/2 

[165] 

8 3/8 

[213] 

8 3/8 

[213] 

8 3/8 

[213] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

28 

[711] 

28 

[711] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

8 

[203] 

8 

[203] 

8 

[203] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

11 

[279] 

13 1/2 

[343] 

13 1/2 

[343] 

13 1/2 

[343] 

13 1/2 

[343] 

13 1/2 

[343] 

13 1/2 

[343] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

15 

[381] 

18 

[457] 

18 

[457] 

18 

[457] 

23 3/8 

[594] 

23 3/8 

[594] 

23 3/8 

[594] 

23 3/8 

[594] 

23 3/8 

[594] 

23 3/8 

[594] 

29 3/8 

[746] 

29 3/8 

[746] 

29 3/8 

[746] 

29 3/8 

[746] 

29 3/8 

[746] 

29 3/8 

[746] 

38 

[965] 

38 

[965] 

52 

[1321] 

52 

[1321] 

52 

[1321] 

52 

[1321] 

52 

[1321] 

52 

[1321] 

12 

[305] 

12 

[305] 

12 

[305] 

14 

[356] 

14 

[356] 

14 

[356] 

14 

[356] 

14 

[356] 

14 

[356] 

17 

[432] 

17 

[432] 

17 

[432] 

17 

[432] 

17 

[432] 

17 

[432] 

19 

[483] 

19 

[483] 

19 

[483] 

19 

[483] 

19 

[483] 

19 

[483] 

19 

[483] 

19 

[483] 

28 

[711] 

28 

[711] 

28 

[711] 

35 

[889] 

35 

[889] 

35 

[889] 

35 

[889] 

35 

[889] 

35 

[889] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

40 

[1016] 

54 

[1372] 

54 

[1372] 

62 

[1575] 

62 

[1575] 

62 

[1575] 

62 

[1575] 

62 

[1575] 

62 

[1575] 

Top View 

(Pneumatic Controls 

Not Shown in This View) 

1844 

15 7/8 

[403] x 15 

7/8 [403] 

11 1/2 

[292] 

9 3/4 

[248] 

3 1/4 

[83] 

6 1/2 

[165] 

40 

[1016] 

NOTE: All dimensions are in inches [mm]. 

Left Side View 

(Control Enclosure and Filter Rack 


15 

[381] 

52 

[1321] 

19 

[483] 

62 

[1575] 

Inlet End View 

(Electronic Controls and Filter Rack 


ENVIRO-TEC 11


DIMENSIONAL DATA 


MODEL CFR-WC HOT WATER COIL DETAIL 

Drawings are not to scale and not for submittal or installation purposes. 

FAN 

SIZE 

04 

06, 11 

18, 21 

24 

30, 40 

44 

G J K M 

10 

[254] 

10 

[254] 

10 

[254] 

10 

[254] 

6 

[152] 

6 

[152] 

12 [305] 10 [254] 

16 [406] 

22 [559] 

28 [711] 

40 

[1016] 

44 

[1118] 

12 1/2 

[318] 

12 1/2 

[318] 

17 1/2 

[445] 

17 1/2 

[445] 

17 1/2 

[445] 

3 

[76] 

3 

[76] 

3 

[76] 

3 

[76] 

9 3/4 

[248] 

5 3/4 

[146] 

Right Side View 

Discharge End View 

Note: All dimensions are in inches [mm]. 

MODEL CFR-EH ELECTRIC HEAT DETAIL 

Fan Sizes 04, 06, 11, 18, 21 and 24 

Fan Sizes 30, 40, and 44 

12 ENVIRO-TEC


GENERAL SELECTION, PSC MOTOR 

MIN. MAX 

ROOM NOISE CRITERIA (NC) 

HORSEPOWER / AMPERAGE DATA 

UNIT 

DIS. RADIATED 

AMPERAGE 

ΔPs 

UNIT FAN HP 

SIZE CFM E.S.P. 

FAN INLET ΔPs 

115V 208V 277V 

(IN. W.G.) (IN. W.G.) 

SIZE 

ONLY 0.5" 1.0" 3.0" LOW MED HI LOW MED HI LOW MED HI LOW MED HI 

100 0.01 0.70 -- 27 27 27 

150 0.02 0.70 -- 27 28 30 

0404 

200 0.03 0.67 -- 28 28 33 

0404 

250 0.04 0.60 -- 32 32 36 

100 0.01 0.70 -- 22 25 26 

200 0.02 0.67 -- 22 25 30 

0504 250 0.02 0.60 -- 25 27 32 0504 

300 0.03 0.51 -- 27 30 35 

1/60 1/25 1/12 .5 .8 1.1 .3 .4 .6 .37 .45 0.50 

350 0.04 0.42 20 33 35 36 

200 0.05 0.67 -- 23 23 28 

250 0.07 0.60 -- 28 30 31 

0604 300 0.10 0.51 -- 28 30 33 0604 

350 0.14 0.42 20 32 33 36 

400 0.19 0.30 20 33 33 36 

300 0.04 0.76 -- 26 30 36 

0506 

350 0.05 0.71 -- 30 33 39 

0506 

300 0.10 0.76 -- 23 25 33 

350 0.14 0.71 -- 25 27 35 

0606 400 0.19 0.65 -- 28 31 36 0606 

450 0.23 0.58 -- 30 32 38 

550 0.34 0.42 23 34 36 40 

1/10 1/8 1/6 2.2 2.4 2.7 .55 .9 1.4 .8 .9 1.0 

300 0.03 0.76 -- 23 25 33 

350 0.04 0.71 -- 25 27 35 

0806 400 0.05 0.65 -- 28 31 36 0806 

450 0.06 0.58 -- 30 32 38 

550 0.09 0.42 23 34 36 40 

400 0.27 0.80 -- 24 28 35 

0611 

500 0.40 0.74 -- 28 33 37 

0611 

400 0.03 0.80 -- 20 24 33 

500 0.05 0.74 -- 23 27 35 

0811 600 0.07 0.69 -- 27 31 37 0811 

800 0.11 0.60 22 32 35 40 

1/8 1/5 1/4 3.7 4.1 4.9 1.1 1.5 2.2 1.4 1.7 2.0 

900 0.14 0.53 25 35 37 42 

600 0.03 0.69 -- 26 30 37 

1011 

800 0.06 0.60 22 33 36 41 

900 0.09 0.53 25 36 38 43 

1011 

600 0.11 0.90 -- 27 30 36 

0818 800 0.19 0.90 -- 31 32 39 0818 

1000 0.30 0.88 23 35 36 42 

600 0.02 0.90 -- 26 28 38 

800 0.04 0.90 -- 27 31 39 

1000 0.06 0.88 23 30 33 40 

1018 

1200 0.08 0.82 26 33 36 43 

1018 

1400 0.11 0.75 30 38 40 46 

1/4 1/3 1/2 8.8 9.3 9.6 2.3 2.7 4.0 2.8 2.9 3.6 

1600 0.15 0.59 33 41 43 48 

800 0.02 0.90 -- 30 32 40 

1000 0.03 0.88 23 32 36 41 

1200 0.05 0.82 26 36 39 43 

1218 

1400 0.06 0.75 30 39 41 46 

1218 

1600 0.07 0.59 33 42 45 50 

1800 0.09 0.40 35 45 47 51 

800 0.06 0.90 -- 26 31 38 

1000 0.10 0.90 -- 30 33 40 

1021 1200 0.13 0.88 24 35 38 43 1021 

1400 0.18 0.82 26 38 40 46 

1600 0.24 0.77 29 40 42 48 

800 0.02 0.90 -- 24 28 40 

1100 0.04 0.90 21 30 33 41 

1400 0.06 0.82 26 36 38 45 

1221 

1700 0.09 0.73 31 40 41 48 

1221 1/3 1/2 3/4 9.4 10.3 10.5 2.5 3.2 4.2 3.6 3.7 4.3 

2000 0.13 0.54 35 43 46 51 

2300 0.15 0.23 39 48 48 53 

1100 0.04 0.90 21 32 36 40 

1400 0.06 0.82 26 38 41 46 

1421 1700 0.09 0.73 31 42 45 50 1421 

2000 0.13 0.54 35 46 47 52 

2300 0.15 0.23 39 50 51 55 

Shaded Unit Sizes (i.e. 0404, 0504, 0606, 0811, 1018, 1221) indicate the most commonly specified selections. 

See notes on following page. The Windows ® based Computer Selection Program is available through your ENVIRO-TEC ® 

representative for complete CFR selection and performance data. 

ENVIRO-TEC 13


GENERAL SELECTION, PSC MOTOR 


MIN. MAX 

UNIT 

Ps 

SIZE CFM E.S.P. 

(IN. W.G.) (IN. W.G.) 

1224 

1424 

1230 

1430 

1630 

1440 

1640 

1644 

1844 

1100 0.04 1.10 21 31 36 43 

1400 0.06 1.10 26 37 40 46 

1700 0.09 1.03 29 39 42 48 

2000 0.12 0.82 32 43 46 52 

2300 0.17 0.56 35 48 48 55 

1100 0.02 1.10 21 31 36 43 

1400 0.04 1.10 26 37 40 46 

1700 0.07 1.03 29 39 42 48 

2000 0.08 0.82 32 43 46 52 

2300 0.11 0.56 35 48 48 55 

2600 0.14 0.25 37 51 51 55 

1100 0.04 0.90 -- 26 27 33 

1500 0.05 0.85 20 30 31 38 

1900 0.09 0.78 23 33 35 40 

2300 0.12 0.68 27 38 38 43 

1100 0.03 0.90 -- 26 28 32 

1500 0.05 0.85 20 30 31 38 

1900 0.07 0.78 23 35 36 41 

2300 0.10 0.68 27 37 38 43 

2700 0.13 0.56 30 40 40 46 

3100 0.18 0.40 33 42 43 50 

1500 0.02 0.85 20 30 31 38 

1900 0.04 0.78 23 32 35 40 

2300 0.06 0.68 27 36 38 42 

2700 0.08 0.56 30 38 40 45 

3100 0.10 0.40 33 41 42 47 

1600 0.06 0.90 -- 26 28 37 

2100 0.10 0.90 22 31 33 41 

2600 0.14 0.87 26 36 37 45 

3100 0.20 0.80 31 41 42 47 

1600 0.04 0.90 -- 27 31 38 

2100 0.07 0.90 22 31 33 41 

2600 0.11 0.87 26 35 38 43 

3100 0.15 0.80 31 41 42 47 

3600 0.21 0.66 34 45 45 50 

4100 0.28 0.40 38 50 50 53 

2100 0.05 1.10 21 30 32 40 

2600 0.09 1.10 25 33 36 42 

3100 0.12 1.00 28 38 39 45 

3600 0.17 0.88 32 42 43 48 

4100 0.22 0.62 36 46 46 51 

2100 0.10 1.10 21 27 34 43 

2600 0.15 1.10 25 31 37 45 

3100 0.22 1.00 28 36 40 46 

3600 0.30 0.88 32 40 42 48 

4100 0.44 0.62 36 43 45 52 

4600 0.56 0.33 39 50 50 56 

ROOM NOISE CRITERIA (NC) 

HORSEPOWER / AMPERAGE DATA 

DIS. RADIATED 

AMPERAGE 

UNIT FAN HP 

FAN INLET Ps 

115V 

208V 

277V 

SIZE 

ONLY 0.5" 1.0" 3.0" LOW MED HI LOW MED HI LOW MED HI LOW MED HI 

1430 

1630 

1440 

1640 

1644 

1844 

1/2 3/4 1.0 8.9 11.0 12.3 1.8 2.8 5.3 3.4 3.8 4.5 

1/4 (2) 1/3 (2) 

1/3 

(2) 

1/2 

(2) 

3/4 (2) 

Shaded Unit Sizes (i.e. 1430, 1640) indicate the most commonly specified selections. 

1224 

1424 

1230 

1/2 

(2) 

1/2 

(2) 

3/4 

(2) 

1.0 

(2) 

17.6 

18.8 

17.8 

18.6 

20.6 

22.0 

19.2 

5.6 

5.8 

7.2 

21.0 5.0 6.4 8.4 7.2 7.4 8.6 

24.6 

4.6 

3.6 

5.4 

5.6 

8.0 

10.6 

6.8 

7.6 

9.0 

NOTES: 

• Min. ΔPs is the static pressure difference across the primary 

air valve with the damper wide open. All downstream losses 

(including optional hot water coil) are handled by the unit fan 

and need not be considered for primary air performance 

calculations. 

• Max. E.S.P. is the external static pressure available on high 

tap at the airflow capacity indicated. Optional hot water coil 

pressure loss is not included with these values. 

• Performance data obtained from tests conducted in accordance 

with ARI Standard 880. 

• Dash (-) indicates NC level less than 20. 

• NC values calculated based upon the 2002 Addendum to 

ARI Standard 885 Appendix E Typical Sound Attenuation 

Values (shown at right), using Ceiling Type 2 for calculating 

Radiated NC. 

DISCHARGE 

OCTAVE BAND 

ATTENUATION VALUES 2 3 4 5 6 7 

Small Box (< 300 CFM) 24 28 39 53 59 40 

Medium Box (300-700 CFM) 27 29 40 51 53 39 

Large Box (> 700 CFM) 29 30 41 51 52 39 

RADIATED 

OCTAVE BAND 


Type 2 - Mineral Fiber Ceiling 18 19 20 26 31 36 

The Windows ® based Computer Selection Program is available through your ENVIRO-TEC ® representative for complete CFR 

selection and performance data. 

14 ENVIRO-TEC


SOUND POWER DATA 

UNIT 

SIZE 

0404 

0504 

0604 

0506 

0606 

0806 

0611 

0811 

1011 

0818 

1018 

1218 

1021 

CFM 

DISCHARGE 

FAN ONLY 

0.5" INLET ΔPs 

OCTAVE BAND NUMBER 

RADIATED 






2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 

100 57 54 53 52 46 42 64 56 49 40 34 34 64 58 49 40 35 35 64 58 51 44 42 44 

150 57 54 53 52 46 42 64 56 49 40 35 34 64 59 51 42 37 36 64 60 54 47 45 45 

200 57 54 53 52 46 42 65 56 49 40 35 34 65 59 52 43 38 36 65 61 58 50 47 45 

250 59 58 57 56 51 47 68 61 53 44 38 36 68 62 55 46 40 38 68 65 61 53 49 47 

100 57 54 53 52 46 42 59 54 48 39 32 30 60 56 49 40 34 33 60 57 50 44 42 44 

200 57 54 53 52 46 42 59 54 47 39 32 30 60 56 50 41 34 33 60 57 55 48 44 44 

250 59 58 57 56 51 47 60 56 49 41 33 31 63 58 52 43 36 35 63 60 57 50 46 45 

300 60 59 57 56 52 48 61 58 51 43 34 32 66 59 54 45 38 36 66 62 60 52 47 46 

350 61 62 59 59 54 51 66 63 54 46 39 37 70 63 56 47 41 39 70 65 61 53 48 46 

200 57 54 53 52 46 42 57 55 46 38 30 28 57 55 48 39 33 31 59 57 54 47 43 42 

250 59 58 57 56 51 47 63 59 50 41 33 32 61 60 51 43 35 33 62 61 56 49 44 43 

300 60 59 57 56 52 48 62 59 50 42 33 32 61 60 52 43 35 33 64 61 58 50 45 43 

350 61 62 59 59 54 51 68 62 53 45 36 36 67 63 54 46 38 37 66 65 60 51 45 43 

400 62 62 59 60 55 52 69 63 54 46 37 37 68 63 56 47 39 38 68 65 61 52 46 45 

300 54 53 53 54 50 46 59 56 52 46 43 45 63 60 55 48 48 48 64 64 61 54 51 50 

350 57 56 55 55 53 50 62 58 55 48 47 48 66 63 57 50 46 48 68 67 64 57 53 51 

200 52 52 51 51 46 41 53 49 46 42 37 41 54 51 48 43 40 41 57 56 54 51 47 46 

300 54 53 53 54 50 46 56 53 49 42 38 41 58 56 51 44 40 41 62 60 58 51 47 46 

350 57 56 55 55 53 50 58 55 51 44 40 42 60 58 53 46 41 42 64 62 60 53 48 46 

400 59 58 57 57 55 53 60 58 54 47 41 42 62 60 56 48 42 43 66 64 61 54 48 47 

450 62 61 60 59 57 55 62 60 55 49 42 41 63 62 57 50 43 42 67 66 63 55 49 47 

550 66 64 62 63 61 59 65 63 59 52 46 44 66 65 60 53 47 45 69 68 65 57 51 49 

300 54 53 53 54 50 46 56 53 49 42 38 41 58 56 51 44 40 41 62 60 58 51 47 46 

350 57 56 55 55 53 50 58 55 51 44 40 42 60 58 53 46 41 42 64 62 60 53 48 46 

400 59 58 57 57 55 53 60 58 54 47 41 42 62 60 56 48 42 43 66 64 61 54 48 47 

450 62 61 60 59 57 55 62 60 55 49 42 41 63 62 57 50 43 42 67 66 63 55 49 47 

550 66 64 62 63 61 59 65 63 59 52 46 44 66 65 60 53 47 45 69 68 65 57 51 49 

400 59 53 52 46 43 41 59 55 50 44 33 29 61 58 54 46 40 37 65 62 60 54 49 47 

500 61 55 55 50 48 47 62 59 54 48 38 33 63 62 58 49 42 39 68 65 62 56 50 48 

400 59 53 52 46 43 41 56 52 46 38 32 32 58 55 50 43 37 37 62 59 58 53 47 47 

500 61 55 55 50 48 47 58 55 48 40 33 33 61 58 52 45 39 38 65 62 60 55 48 48 

600 63 57 59 54 52 52 60 58 51 43 35 35 63 61 54 47 40 39 67 65 62 56 49 49 

800 66 62 63 60 58 58 65 62 56 50 40 40 66 64 58 51 43 42 72 69 64 57 50 50 

900 69 65 66 64 62 62 67 64 58 52 43 43 68 66 60 54 45 45 73 71 66 59 51 51 

600 63 57 59 54 52 52 61 57 51 44 34 32 64 60 55 47 38 37 67 65 62 54 47 46 

800 66 62 63 60 58 58 66 63 57 50 40 40 69 65 59 51 42 41 72 70 65 57 49 48 

900 69 65 66 64 62 62 68 65 59 52 42 42 70 67 61 53 44 44 73 72 66 59 50 49 

600 62 58 56 50 48 45 56 58 49 41 37 33 59 60 53 45 38 35 65 65 60 53 47 44 

800 64 61 59 56 53 52 62 61 54 46 39 37 63 62 57 48 41 37 69 68 63 56 50 47 

1000 67 64 63 61 59 59 65 64 58 50 43 40 66 65 61 52 45 41 72 71 66 58 52 49 

600 62 58 56 50 48 45 55 57 48 38 32 29 59 59 52 43 38 35 63 64 63 54 47 46 

800 64 61 59 56 53 52 58 58 50 39 33 31 62 61 55 46 39 36 67 67 64 55 49 47 

1000 67 64 63 61 59 59 62 60 52 44 38 36 64 63 56 47 41 38 71 69 65 56 50 48 

1200 69 68 66 65 63 63 65 63 56 48 42 40 67 65 58 50 43 41 73 72 66 58 52 50 

1400 70 70 69 69 67 67 69 67 58 51 46 45 71 69 61 53 47 46 76 74 67 60 54 52 

1600 72 73 72 72 70 70 72 70 61 54 49 48 73 72 63 56 50 49 78 76 69 62 55 54 

800 64 61 59 56 53 52 60 60 52 46 37 32 62 62 55 48 42 38 66 67 65 57 50 49 

1000 67 64 63 61 59 59 63 62 54 48 41 38 65 65 57 50 45 42 69 69 66 58 52 50 

1200 69 68 66 65 63 63 66 65 57 51 46 44 69 68 60 53 48 46 73 72 67 59 53 51 

1400 70 70 69 69 67 67 68 68 59 53 48 47 71 70 62 55 50 48 75 74 68 60 54 53 

1600 72 73 72 72 70 70 71 71 62 56 51 50 73 73 64 57 52 50 77 77 69 62 56 55 

1800 73 74 73 74 72 72 73 73 64 58 53 52 75 75 66 59 54 53 79 78 71 63 58 56 

800 59 55 55 54 51 49 60 57 50 43 34 30 63 61 54 46 40 37 68 66 63 55 49 48 

1000 62 60 60 58 56 55 65 60 53 46 36 33 67 63 57 49 42 39 72 69 65 57 51 50 

1200 65 63 63 62 60 60 69 64 57 50 42 41 70 67 59 52 45 43 75 72 67 59 52 51 

1400 68 65 66 65 63 63 71 67 60 53 45 43 72 69 61 54 47 45 77 74 68 60 54 52 

1600 72 69 69 69 66 66 73 69 62 55 47 45 74 71 63 56 50 49 79 76 70 62 55 54 

Shaded Unit Sizes (i.e. 0404, 0504, 0606, 0811, 1018) indicate the most commonly specified selections. 

NOTES: 

• Data obtained from tests conducted in accordance with ARI Standard 880. 

• Sound levels are expressed in decibels, dB re: 1 x 10 -12 Watts. 

• Fan external static pressure is 0.25 inches w .g. 



ENVIRO-TEC 15


SOUND POWER 


UNIT 

SIZE 

1221 

1421 

1224 

1424 

1230 

1430 

1630 

1440 

1640 

1644 

1844 

CFM 

DISCHARGE 

FAN ONLY 



RADIATED 






2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 2 3 4 5 6 7 

800 59 55 55 54 51 49 59 55 50 41 35 33 61 59 54 46 39 37 66 65 65 58 50 48 

1100 64 61 61 60 58 57 63 60 54 45 38 37 65 63 56 49 42 40 70 69 66 59 51 49 

1400 68 65 66 65 63 63 68 65 57 50 44 43 70 67 61 52 46 45 74 73 67 60 53 51 

1700 73 70 70 70 67 68 71 69 61 53 47 46 73 70 63 55 49 48 77 76 70 62 56 54 

2000 77 75 73 74 72 72 75 72 64 57 51 50 76 74 66 58 52 51 80 78 71 64 57 56 

2300 80 78 76 78 76 76 78 76 67 61 55 54 79 76 68 62 56 55 82 80 73 65 59 58 

1100 64 61 61 60 58 57 65 62 54 46 37 34 68 65 57 49 43 40 71 69 63 56 50 49 

1400 68 65 66 65 63 63 69 67 58 50 45 43 72 70 61 53 47 46 75 74 67 59 52 51 

1700 73 70 70 70 67 68 72 71 61 54 49 48 74 73 63 56 50 49 78 77 69 61 55 54 

2000 77 75 73 74 72 72 76 74 65 58 53 52 77 75 66 58 53 52 80 79 71 63 57 56 

2300 80 78 76 78 76 76 78 77 68 61 56 56 79 78 69 61 56 56 82 81 72 65 59 58 

1100 64 62 61 60 58 57 64 61 53 45 36 35 67 65 57 48 39 36 71 71 68 57 46 42 

1400 69 66 66 65 64 63 68 66 57 49 40 37 70 69 60 52 42 39 74 74 70 58 48 44 

1700 72 69 69 68 67 66 70 68 59 52 43 41 72 71 61 54 45 42 76 76 69 60 52 48 

2000 76 72 71 72 70 69 74 72 62 55 48 44 75 74 64 58 48 45 78 79 71 61 54 50 

2300 78 75 73 75 73 72 76 76 65 58 51 49 77 76 66 60 53 50 80 81 72 63 56 53 

1100 64 62 61 60 58 57 64 61 53 45 36 35 67 65 57 48 39 36 71 71 68 57 46 42 

1400 69 66 66 65 64 63 68 66 57 49 40 37 70 69 60 52 42 39 74 74 70 58 48 44 

1700 72 69 69 68 67 66 70 68 59 52 43 41 72 71 61 54 45 42 76 76 69 60 52 48 

2000 76 72 71 72 70 69 74 72 62 55 48 44 75 74 64 58 48 45 78 79 71 61 54 50 

2300 78 75 73 75 73 72 76 76 65 58 51 49 77 76 66 60 53 50 80 81 72 63 56 53 

2600 80 77 75 77 75 74 77 78 67 60 53 51 78 78 67 61 54 52 81 81 72 64 57 54 

1100 59 61 55 49 48 45 60 57 48 40 33 33 61 58 51 42 36 33 67 62 58 50 40 35 

1500 62 63 57 52 52 49 64 60 52 43 35 34 65 61 54 45 39 35 73 66 62 52 44 40 

1900 65 66 62 57 57 56 65 63 54 47 39 35 67 64 56 46 41 38 74 68 64 54 47 43 

2300 68 69 65 61 61 61 70 67 59 51 43 39 71 67 60 52 44 40 77 71 66 56 50 46 

1100 59 61 55 49 48 45 61 57 48 40 34 34 63 59 50 42 34 33 68 62 56 48 37 34 

1500 62 63 57 52 52 49 65 60 52 44 35 34 66 61 53 45 35 33 73 66 60 50 39 35 

1900 65 66 62 57 57 56 68 64 55 47 36 35 70 65 57 48 38 34 75 68 62 52 40 36 

2300 68 69 65 61 61 61 69 66 57 50 42 38 71 67 59 51 43 39 77 71 66 56 46 43 

2700 71 71 69 65 65 65 72 69 60 53 45 41 74 69 62 54 48 44 79 73 67 58 51 48 

3100 74 74 72 70 70 70 76 71 63 56 49 46 76 72 64 57 50 46 82 76 69 60 53 50 

1500 62 63 57 52 52 49 62 60 49 42 34 31 64 61 52 45 40 37 72 67 62 53 49 48 

1900 65 66 62 57 57 56 67 62 54 46 35 32 69 64 56 48 42 38 74 69 63 54 50 49 

2300 68 69 65 61 61 61 69 65 57 50 40 35 71 67 58 51 44 39 76 71 66 56 51 49 

2700 71 71 69 65 65 65 71 67 59 52 45 40 73 69 61 53 46 42 78 72 66 57 53 50 

3100 74 74 72 70 70 70 73 70 61 54 48 44 75 71 63 55 49 44 80 75 68 59 54 51 

1600 62 59 57 53 53 52 62 57 50 42 31 29 64 59 53 40 32 29 72 65 61 50 38 33 

2100 65 63 62 58 58 58 65 61 54 45 34 31 69 63 57 47 34 30 75 69 64 54 44 40 

2600 68 66 66 62 62 63 70 65 58 48 37 33 71 66 60 50 39 34 78 72 66 56 46 42 

3100 71 70 69 66 67 68 74 70 62 50 39 35 75 71 63 55 44 41 80 75 69 59 51 47 

1600 62 59 57 53 53 52 61 58 50 43 38 36 63 61 53 45 38 37 72 67 61 52 44 39 

2100 65 63 62 58 58 58 66 61 55 48 40 39 68 63 57 49 40 38 74 70 64 55 46 41 

2600 68 66 66 62 62 63 69 64 57 50 42 41 71 67 60 53 44 40 77 72 66 56 48 45 

3100 71 70 69 66 67 68 74 70 62 55 46 44 75 71 63 56 46 42 79 75 68 60 51 47 

3600 74 73 72 70 71 71 77 73 66 59 52 47 78 73 66 58 51 47 82 77 71 63 55 50 

4100 77 76 75 73 74 75 81 77 69 62 54 51 81 77 70 62 54 52 84 80 74 65 58 55 

2100 67 64 63 61 57 56 64 60 53 46 37 29 66 62 56 49 40 35 73 68 65 57 51 45 

2600 70 67 68 65 62 61 67 63 56 49 40 37 69 65 59 51 42 38 75 71 67 59 52 47 

3100 72 70 71 69 66 65 71 67 60 53 43 40 72 68 61 53 44 40 77 73 69 60 54 49 

3600 74 73 73 72 70 69 75 71 63 55 49 46 75 72 64 56 50 47 80 76 71 63 56 52 

4100 77 76 76 76 73 73 77 74 66 58 52 50 78 74 67 58 53 51 82 78 72 64 57 54 

2100 67 64 63 61 57 56 60 58 53 46 39 35 64 61 59 51 45 41 71 68 68 63 58 56 

2600 70 67 68 65 62 61 63 61 55 48 42 37 67 64 62 53 47 44 73 71 69 66 60 57 

3100 72 70 71 69 66 65 68 65 58 52 46 40 70 66 65 56 50 46 78 74 70 68 62 60 

3600 74 73 73 72 70 69 73 69 61 56 49 42 74 70 67 59 52 50 80 76 72 71 65 64 

4100 77 76 76 76 73 73 76 72 64 58 51 44 77 73 68 61 55 53 83 79 74 74 68 67 

4600 80 79 78 79 76 76 79 77 66 61 54 46 81 77 70 64 59 58 86 81 76 75 70 69 

Shaded Unit Sizes (i.e. 1221, 1430, 1640) indicate the most commonly specified selections. 

NOTES: 

• Data obtained from tests conducted in accordance with ARI Standard 880. 

• Sound levels are expressed in decibels, dB re: 1 x 10-12 W atts. 

• Fan external static pressure is 0.25 inches w .g. 



16 ENVIRO-TEC


FAN PERFORMANCE, PSC MOTOR 

GENERAL FAN NOTE 

The fan curves depicted on this page are for PSC type motors. Each fan curve depicts the actual performance for 

the relative motor tap without any additional fan balance adjustment. Actual specified capacities which fall below a 

particular fan curve (LOW, MED or HI) can be obtained by adjustment of the electronic fan speed controller . Selections 

should only be made in the non-shaded areas. The minimum external static pressure requirement is shown for each 

fan assembly. The unit fan should not be energized prior to realizing this minimum external static pressure. 

NOTE: 

Terminals equipped with a hot-water heating coil require the addition of the coil pressure drop to the specified external stati 

pressure before making the fan selection. 

c 

E.S.P. 

(IN. W.G.) 

0.8 

UNIT SIZES 0404, 0504, 0604 

E.S.P. 

(IN. W.G.) 

0.9 

UNIT SIZES 0506, 0606, 0806 

0.7 

0.8 

0.6 

0.5 

0.4 

LOW TAP MED TAP 

HI TAP 

0.3 

0.2 

0.1 

0.0 

100 150 200 250 300 350 400 450 

Airflow/CFM (Standard Density Air) 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

LOW 

TAP 

200 250 300 350 400 450 500 550 600 650 700 


MED 

TAP 

HI 

TAP 

E.S.P. 

(IN. W.G.) 

0.9 

UNIT SIZES 0611, 0811, 1011 

0.8 

0.7 

0.6 

0.5 

0.4 

HI TAP 

0.3 

MED TAP 

0.2 

LOW TAP 

0.1 

400 500 600 700 800 900 1000 


ENVIRO-TEC 17


FAN PERFORMANCE, PSC MOTOR 


E.S.P. 

(IN. W.G.) 

0.9 

UNIT SIZES 0818, 1018, 1218 

E.S.P. 

(IN. W.G.) 

0.9 

UNIT SIZES 1021, 1221, 1421 

0.8 

0.8 

0.7 

0.7 

0.6 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

LOW 

TAP 

MED 

TAP 

HI 

TAP 

0.5 

0.4 

0.3 

0.2 

0.1 

LOW TAP 

MED TAP 

HI TAP 

0.0 

700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 


0.0 

900 1100 1300 1500 1700 1900 2100 2300 


E.S.P. 

(IN. W.G.) 

1.2 

1.1 

1.0 

0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

UNIT SIZES 1224, 1424 

LOW TAP 

MED TAP 

HI TAP 

1000 1200 1400 1600 1800 2000 2200 2400 2600 


E.S.P. 

(IN. W.G.) 

0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

UNIT SIZES 1230, 1430, 1630 

LOW 

TAP 

HI 

TAP 

MED 

TAP 

1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 


E.S.P. 

(IN. W.G.) 

1.0 


E.S.P. 

(IN. W.G.) 

1.1 


0.9 

1.0 

0.8 

0.9 

0.7 

0.8 

0.6 

0.5 

0.4 

0.3 

0.2 

LOW 

TAP 

MED 

TAP 

HI 

TAP 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

LOW TAP 

MED TAP 

HI TAP 

0.1 

0.1 

0.0 

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 


0.0 

2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 


18 ENVIRO-TEC


ECM TM FAN MOTOR OPTION 

THE ENERGY EFFICIENT SOLUTION 

ENVIRO-TEC ® offers an alternative to the PSC motor 

that significantly increases the operating ef ficiency of 

fan terminal units. This motor is frequently referred to 

as an ECM (electronically commutated motor). It is 

a brushless DC (BLDC) motor utilizing a permanent 

magnet rotor. The motor has been in production for 

years and is commonly used in residential HVAC units. 

Fan speed control is accomplished through a microprocessor 

based variable speed controller (inverter) integral 

to the motor. The motor provides peak efficiency ratings 

between 70 & 80% for most applications. 

ECM FEATURES AND BENEFITS 

Ultra-High Motor & Controller Energy Efficiency 

DC motors are significantly more ef ficient than AC 

motors. At full load the ECM is typically 20% more 

efficient than a standard induction motor. Due to acoustical 

considerations, the fan motor on a fan powered 

terminal typically operates considerably less than full 

load. At this condition the overall motor / controller 

(SCR) efficiency can be cut in half. Due to the permanent 

magnet, DC design, the ECM maintains a high 

efficiency at low speeds. Most fan powered unit selections 

will have an overall ef ficiency greater than 75%. 

Furthermore, the motor heat gain is greatly reduced 

providing additional energy savings by reducing the cold 

primary air requirement. 

Pressure Independent Fan Volume 

The integral microprocessor based controller includes a 

feature that provides sensorless (no external feedback) 

constant airflow operation by automatically adjusting the 

speed and torque in response to system pressure 

changes. This breakthrough will no doubt have far reaching 

benefits and endless applications. For starters, the 

fan volume supplied to the space will not significantly 

change as a filter becomes loaded. This provides new 

opportunities for medical applications where space pressurization 

and HEPA filters are applied. The air balance 

process will become simpler and more accurate since 

the fan volume will not need to be re-adjusted after the 

diffuser balance is accomplished. 

Factory Calibrated Fan Volume 

Due to the pressure independent feature, the fan 

capacity can now be calibrated at the factory . Within 

the published external pressure limits, the fan motor will 

automatically adjust to account for the varying static 

pressure requirements associated with dif ferent 

downstream duct configurations. This feature should 

not preclude the final field air balance verification process 

during the commissioning stage of a project. An 

electronic (PWM) speed control device is provided to 

allow field changes of the fan capacity as the need 

arises. Fan volume can be field calibrated in two fashions. 

First, a potentiometer is provided allowing 

manual adjustment using an instrument type screwdriver. 

In addition, the fan volume can be calibrated 

through the BMS using an analog output (2 to 10VDC 

typical) to the speed controller . A fan volume verses 

DC volts calibration chart is provided. 

Designer / Owner Flexibility 

The ECM incorporates ball bearings in lieu of sleeve 

bearings typically utilized with an induction motor . 

Unlike a sleeve bearing motor, the ECM does not 

have a minimum RPM requirement for bearing 

lubrication. This allows it to operate over a 

much wider speed range. One 

motor can handle the capacity 

range previously handled by two 

motors, allowing simplification 

of the product line and considerable 

flexibility to the 

designer. The owner also 

benefits since equipment 

changes are much less 

likely with tenant requirement 

changes. A reduced 

spare parts inventory is 

another plus. 

Custom Applications — 

Programmable Fan Operation 

Boundless control opportunities arise due to the controllability 

of a DC motor combined with an integral 

microprocessor. V arious input signals can direct the 

motor to behave in an application specific mode. For 

instance, multiple discrete fan capacities can be 

achieved. In addition, the fan speed can be varied in 

response to the space temperature load. The fan can 

also be programmed for a soft start. The motor starts 

at a very low speed and slowly ramps up to the required 

speed. This is especially beneficial for parallel flow fan 

terminals since the perceived change in space sound 

levels is lessened. 

Extended Motor Life 

The high motor ef ficiency provides a significantly 

reduced operating temperature compared to an induction 

motor . The lower temperature increases the 

longevity of all electrical components and therefore the 

life of the motor. The ball bearings do not require lubrication 

and do not adversely impact the motor life. Most 

fan powered applications will provide a motor life 

between 60,000 and 100,000 hours. A motor life of 

twenty five years will not be uncommon for a series flow 

fan terminal and a longer life can be expected for a 

parallel flow unit. 

ENVIRO-TEC 19


GENERAL SELECTION, ECM TM MOTOR 


UNIT 

SIZE 

0611 

0811 

1011 

0818 

1018 

1218 

1021 

1221 

1421 

1224 

1424 

1440 

1640 

MIN PROJECTED ROOM NOISE CRITERION (NC) 2 

CFM Ps 1 DIS. 

RADIATED 

(IN W.G.) 

0.5" INLET 1.0" INLET 3.0" INLET 

FAN ONLY 

Ps Ps Ps 

200 0.07 -- -- 20 28 

300 0.15 -- -- 24 32 

400 0.27 -- 24 28 35 

500 0.40 -- 28 33 37 

400 0.03 -- 20 24 33 

500 0.05 -- 23 27 35 

600 0.07 -- 27 31 37 

800 0.11 22 32 35 40 

900 0.14 25 35 37 41 

600 0.03 -- 26 30 37 

800 0.06 22 33 36 41 

900 0.08 25 35 38 43 

600 0.11 -- 27 30 36 

800 0.19 -- 31 32 39 

1000 0.30 23 35 36 42 

600 0.02 -- 26 28 38 

800 0.04 -- 27 31 39 

1000 0.06 23 30 33 40 

1200 0.08 27 33 36 43 

1400 0.11 30 38 40 46 

1500 0.14 31 39 41 47 

800 0.02 -- 30 32 40 

1000 0.03 23 32 36 41 

1200 0.05 26 36 39 43 

1400 0.06 30 39 41 46 

1500 0.07 31 40 43 48 

600 0.04 -- 20 24 35 

800 0.06 -- 26 31 38 

1000 0.10 -- 30 33 40 

1200 0.13 24 35 38 43 

1400 0.18 26 38 40 46 

1600 0.24 29 40 42 48 

600 0.01 -- 20 24 35 

800 0.02 -- 24 28 40 

1100 0.04 21 30 33 41 

1400 0.06 26 36 38 45 

1700 0.09 31 40 41 48 

2000 0.13 35 43 46 51 

600 0.01 -- 20 24 35 

800 0.02 -- 24 28 40 

1100 0.04 21 32 36 40 

1400 0.06 26 38 41 46 

1700 0.09 31 42 45 50 

2000 0.13 35 46 47 52 

1400 0.06 26 37 40 46 

1700 0.09 29 39 42 48 

2000 0.12 32 43 46 52 

2300 0.17 35 48 48 55 

1400 0.04 26 37 40 46 

1700 0.08 29 39 42 48 

2000 0.11 32 43 46 52 

2350 0.12 35 48 48 55 

1600 0.06 -- 26 28 37 

2100 0.10 22 31 33 41 

2600 0.14 27 36 37 45 

3100 0.20 31 41 42 47 

1600 0.04 -- 27 31 38 

2100 0.07 22 31 33 41 

2600 0.11 27 35 38 43 

3100 0.15 31 41 42 47 

3400 0.19 33 43 44 49 

FAN 

HP 

1/3 

1/2 

3/4 

1 

2 

@ 

1/2 

VOLTS FLA 

3 

120 

277 

277 

120 5 

5.0 

120 7.7 

277 

3-PHASE 4 

NEUTRAL 

AMPS 

N/A 

2.6 5.4 

4.1 

120 5 9.6 

277 

277 

5.5 

N/A 

7.2 

N/A 

10.9 

12.8 N/A 

6.9 

13.3 

120 15.4 N/A 

8.2 

14.2 

Most variable speed electronic devices, 

including the ECM operate with a 

rectified and filtered AC power . As a 

result of the power conditioning, the 

input current draw is not sinusoidal; 

rather, the current is drawn in pulses at 

the peaks of the AC voltage. This pulsating 

current includes high frequency 

components called harmonics. 

Harmonic currents circulate on the delta 

side of a Delta-W ye distribution transformer. 

On the W ye side of the 

transformer, these harmonic currents 

are additive on the neutral conductor. A 

transformer used in this type of application 

must be sized to carry the output 

KVA that will include the KV A due to 

circulating currents. 

Careful design must be provided when 

connecting single-phase products to 

three-phase systems to avoid potential 

problems such as overheating of neutral 

wiring conductors, connectors, and 

transformers. In addition, design consideration 

must be provided to address 

the degradation of power quality by the 

creation of wave shape distortion. 

In summary, proper consideration must 

be given to the power distribution transformer 

selection and ground neutral 

conductor design to accommodate the 

3-phase neutral AMPs shown in the 

adjacent table. Specific guidelines are 

available from the factory. 

NOTES: 

1. Min. ΔPs is the static pressure dif ference across the primary air valve with the 

damper wide open. All downstream losses (including optional hot water coil) are 

handled by the unit fan and need not be considered for primary air performance 

calculations. Data is certified in accordance with the ARI 880 certification program. 

2. NC values calculated based upon the 2002 Addendum to ARI Standard 885 

Appendix E Typical Sound Attenuation Values (shown at right). 

3. Calculate wire feeder size and maximum overcurrent protective device per NEC 

and local code requirements. Recommended fuse type shall be UL Class RK5, 

J, CC or other motor rated fuse. 

4. Neutral harmonic current contribution for each 3-phase balanced load of motors 

at full speed. 

5. Includes factory provided 2mH choke for power factor correction. 

DISCHARGE 

OCTAVE BAND 


Small Box (< 300 CFM) 24 28 39 53 59 40 

Medium Box (300-700 CFM) 27 29 40 51 53 39 

Large Box (> 700 CFM) 29 30 41 51 52 39 

RADIATED 

OCTAVE BAND 


Type 2 - Mineral Fiber Ceiling 18 19 20 26 31 36 

20 ENVIRO-TEC


FAN PERFORMANCE, ECM TM MOTOR 

E.S.P. 

(IN. W.G.) 

1.0 

0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

UNIT SIZES 0611, 0811, 1011 

GENERAL FAN NOTE 

The fan curves depicted on this page are for ECM 

type motors. Actual specified capacities which fall below 

the fan curve can be obtained by adjustment of the fan 

speed controller. Selections should only be made in 

the non-shaded areas. The minimum external static 

pressure requirement is shown for each fan assembly. 

The unit fan should not be energized prior to realizing 

this minimum external static pressure. 

0.2 

0.1 

0.0 

150 300 450 600 750 900 

AIRFLOW / CFM (Standard Density Air) 

Terminals equipped with a hot water heating coil require 

the addition of the coil pressure drop to the specified 

external static pressure before making the fan selection. 

E.S.P. 

UNIT SIZES 0818, 1018, 1218 

(IN W.G.) (IN. W.G.) 


1.0 

1.0 

E.S.P. 

0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

500 600 700 800 900 1000 1100 1200 1300 1400 1500 


0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

1400 1600 1800 2000 2200 2400 


E.S.P. 

UNIT SIZES 1021, 1221, 1421 

E.S.P. 

(IN W.G.) UNIT SIZES 1440, 1640 

(IN W.G.) 

1.0 

1.0 

0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

600 800 1000 1200 1400 1600 1800 2000 


0.9 

0.8 

0.7 

0.6 

0.5 

0.4 

0.3 

0.2 

0.1 

0.0 

1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 


ENVIRO-TEC 21


ARI RATINGS 


SIZE 

PRIMARY 

AIRFLOW 

RATE 

(CFM) 

AIRFLOW & PRESSURE 

FAN 

AIRFLOW 

RATE 

(CFM) 

ELECTRICAL 

POWER 

INPUT 

(WATTS) 

MINIMUM 

SUPPLY 

OPERATING 

PRESSURE 

(IN. W.G.) 

MINIMUM FAN 

DISCHARGE 

STATIC 

PRESSURE 

(IN. W.G.) 

0404 150 400 125 0.02 0.10 

0504 250 400 125 0.02 0.10 

0604 400 400 125 0.19 0.10 

0506 250 550 175 0.03 0.10 

0606 400 550 175 0.19 0.10 

0806 550 550 175 0.09 0.10 

0611 400 900 485 0.27 0.25 

0811 700 900 485 0.10 0.25 

1011 900 900 485 0.09 0.25 

0818 700 1600 665 0.15 0.10 

1018 1100 1600 665 0.08 0.10 

1218 1600 1600 665 0.07 0.10 

1021 1100 2100 1055 0.12 0.10 

1221 1600 2100 1055 0.07 0.10 

1421 2100 2100 1055 0.14 0.10 

1224 1600 2600 1060 0.08 0.20 

1424 2100 2600 1060 0.11 0.20 

1230 1600 2800 960 0.07 0.20 

1430 2100 2800 960 0.06 0.20 

1630 2800 2800 960 0.07 0.20 

1440 2100 3600 1660 0.10 0.25 

1640 2800 3600 1660 0.13 0.25 

1644 2800 4600 2300 0.09 0.20 

1844 3500 4600 2300 0.29 0.20 

SIZE 

PRIMARY 

AIRFLOW 

RATE 

(CFM) 

FAN 

AIRFLOW 

RATE 

(CFM) 

0404 150 400 

0504 250 400 

0604 400 400 

0506 250 550 

0606 400 550 

0806 550 550 

0611 400 900 

0811 700 900 

1011 900 900 

0818 700 1600 

1018 1100 1600 

1218 1600 1600 

1021 1100 2100 

1221 1600 2100 

1421 2100 2100 

1224 1600 2600 

1424 2100 2600 

1230 1600 2800 

1430 2100 2800 

1630 2800 2800 

1440 2100 3600 

1640 2800 3600 

1644 2800 4600 

1844 3500 4600 

NOTE: Based on standard PSC motor. 

STANDARD SOUND RATINGS 

STANDARD RATINGS - SOUND POWER LEVEL, dB RE: 1 X 10 -12 WATTS 

RADIATED 

DISCHARGE 

FAN ONLY 1.5" WATER STATIC PRESSURE FAN ONLY 

Hz Octave Band Center Frequency Hz Octave Band Center Frequency Hz Octave Band Center Frequency 

125 250 500 1000 2000 4000 125 250 500 1000 2000 4000 125 250 500 1000 2000 4000 

65 64 52 46 39 37 68 65 58 50 42 41 62 62 59 60 57 55 

65 64 52 46 39 37 68 65 58 50 42 41 62 62 59 60 57 55 

65 64 52 46 39 37 68 65 58 50 42 41 62 62 59 60 57 55 

65 61 55 49 42 42 68 67 63 55 49 47 66 64 62 63 61 59 

65 61 55 49 42 42 68 67 63 55 49 47 66 64 62 63 61 59 

65 61 55 49 42 42 68 67 63 55 49 47 66 64 62 63 61 59 

69 66 60 54 46 45 72 69 63 55 47 46 69 65 66 64 62 62 

69 66 60 54 46 45 72 69 63 55 47 46 69 65 66 64 62 62 

69 66 60 54 46 45 72 69 63 55 47 46 69 65 66 64 62 62 

70 68 59 56 53 52 76 75 67 59 54 52 72 75 74 75 72 72 

70 68 59 56 53 52 76 75 67 59 54 52 72 75 74 75 72 72 

70 68 59 54 53 51 76 75 67 59 54 52 72 75 74 75 72 72 

73 69 62 57 52 52 80 78 69 61 56 55 77 75 74 75 73 73 

73 69 62 57 52 52 80 78 69 61 56 55 77 75 74 75 73 73 

73 69 62 57 52 52 80 78 69 61 56 55 77 75 74 75 73 73 

74 72 64 58 55 55 80 80 70 62 56 53 80 77 75 77 75 74 

74 72 64 58 55 55 80 80 70 62 56 53 80 77 75 77 75 74 

72 69 61 55 51 49 76 71 64 56 49 45 72 72 70 66 66 66 

72 69 61 55 51 49 76 71 64 56 49 45 72 72 70 66 66 66 

72 69 61 55 51 49 76 71 64 56 49 45 72 72 70 66 66 66 

72 71 65 59 56 56 80 76 68 60 53 49 74 73 72 70 71 71 

72 71 65 59 56 56 80 76 68 60 53 49 74 73 72 70 71 71 

77 75 67 62 59 58 82 77 73 68 63 61 80 79 78 79 76 76 

77 75 67 62 59 58 82 77 73 68 63 61 80 79 78 79 76 76 

22 ENVIRO-TEC


ELECTRIC HEAT 


• cETL listed as an assembly for safety compliance 

per UL 1995 

• Primary auto-reset high limit 

• Secondary high limit 

• Hinged control panel 

• Ni-Chrome elements 

• Primary/secondary power terminations 

• Fusing per NEC 

• Wiring diagram and ETL label 

• Fan interlock device (relay or P.E. switch) 

• Single point power connection 

• Available kW increments are as follows: 

0.5 to 5.0 kW - .25 kW ; 5.0 to 10.0 kW - .50 kW ; 

Above 10 kW - 1.0 kW 


• Disconnect (toggle or door interlocking) 

• P.E. switches 

• Mercury and magnetic contactors 

• Manual reset secondary limit 

• Proportional control (SSR) 

• 24 volt control transformer 

• Airflow switch 

MAXIMUM ALLOWABLE KW 

MODEL CFR-EH 

SELECTION PROCEDURE 

With standard heater elements, the maximum capacity (kW) 

is obtained by dividing the heating (fan) SCFM by 70. In 

other words, the terminal must have at least 70 SCFM per 

kW. In addition, each size terminal has a maximum allowable 

kW based upon the specific heater element 

configuration (i.e. voltage, phase, number of steps, etc.). 

Contact your ENVIRO-TEC ® representative or refer to the 

ENVIRO-TEC ® Windows ® based computer selection program 

for design assistance. 

Heaters require a minimum of 0.07" w.g. downstream static 

pressure to ensure proper operation. 

UNIT SIZE MAX CFM MAX kW 

0404 250 3 

0504 350 5 

0604 400 5 

0506 350 5 

0606 550 7 

0806 700 10 

0611 500 7 

0811 900 13 

1011 900 13 

0818 1000 14 

1018 1600 22 

1218 1800 25 

1021 1600 22 

1221 2300 30 

1421 2300 30 

1224 2300 20 

1424 2600 25 

1230 2300 20 

1430 3100 30 

1630 3100 30 

1440 3100 30 

1640 4100 35 

1644 4100 40 

1844 4600 40 

For optimum dif fuser performance in overhead heating 

applications, the supply air temperature should be within 

20°F of the desired space temperature. This typically 

requires a higher air capacity which provides higher air 

motion in the space increasing thermal comfort. The electric 

heater should be selected with this in mind, keeping the LAT 

as low as possible. 

Selection Equations 

kW = SCFM x ΔT x 1.085* 

3413 

CFM = kW x 3413 

ΔT x 1.085* 

ΔT = kW x 3413 

SCFM x 1.085* 

* Air density at sea level - reduce by 0.036 

for each 1000 feet of altitude above sea level. 

Calculating Line Amperage 

Single Phase Amps = kW x 1000 

V olts 

Three Phase Amps = kW x 1000 

V olts x 1.73 

ENVIRO-TEC 23


HOT WATER COIL DATA 


MODEL CFR-WC 


• ENVIRO-TEC ® coils are designed, manufactured 

and tested by Johnson Controls 

• Aluminum fin construction with die-formed spacer 

collars for uniform spacing 

• Mechanically expanded copper tubes, leak tested 

to 450 PSIG air pressure and rated at 300 PSIG 

working pressure at 200°F 

• 1, 2, 3 and 4 row configurations 

• Male sweat type water connections 

• Top and bottom access plate in coil casing for fan 

sizes 04 through 24. Coil access through bottom 

casing panel for fan sizes 30, 40 and 44. 


• Steam coils 

• Multi-circuit coils for reduced water pressure 

drop 

• Opposite hand water connections 

DEFINITION OF TERMS 

EAT Entering Air Temperature (°F) 

LAT Leaving Air Temperature (°F) 

EWT Entering Water Temperature (°F) 

LWT Leaving Water Temperature (°F) 

CFM Air Capacity (Cubic Feet per Minute) 

GPM Water Capacity (Gallons per Minute) 

MBH 1,000 BTUH 

BTUH Coil Heating Capacity 

(British Thermal Units per Hour) 

ΔT EWT minus EAT 

SELECTION PROCEDURE 

Hot W ater Coil Performance Tables are based upon a 

temperature difference of 115°F between entering water 

and entering air. If this ΔT is suitable, proceed directly to 

the performance tables for selection. All pertinent performance 

data is tabulated. 

ENTERING WATER - AIR TEMPERATURE DIFFERENTIAL (ΔT) CORRECTION FACTORS 

ΔT 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 

FACTOR 0.15 0.19 0.23 0.27 0.31 0.35 0.39 0.43 0.47 0.51 0.55 0.59 0.63 0.67 0.71 

ΔT 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 

FACTOR 0.75 0.79 0.83 0.88 0.92 0.96 1.00 1.04 1.08 1.13 1.17 1.21 1.25 1.29 1.33 

The table above gives correction factors for various entering ΔT’s (difference between entering water and entering 

air temperatures). Multiply MBH values obtained from selection tables by the appropriate correction factor above 

to obtain the actual MBH value. Air and water pressure drop can be read directly from the selection table. The 

leaving air and leaving water temperatures can be calculated from the following fundamental formulas: 

LAT = EAT + BTUH 

L WT = EWT - BTUH 

1.085 x CFM 500 x GPM 


selection and hot water coil performance data. 

24 ENVIRO-TEC



Rate 

(CFM) 

100 

150 

200 

250 

300 

350 

400 

AIRFLOW 

Air PD 

(IN. W.G.) 

1 Row 0.01 

2 Row 0.01 

1 Row 0.01 

2 Row 0.02 

1 Row 0.02 

2 Row 0.04 

1 Row 0.03 

2 Row 0.06 

1 Row 0.04 

2 Row 0.08 

1 Row 0.05 

2 Row 0.11 

1 Row 0.07 

2 Row 0.14 

MODEL CFR-WC UNIT SIZES 0404, 0504, 0604 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 

Rate Water PD (FT. W.G.) 

(MBH) 

(GPM) 1 Row 2 Row 1 Row 2 Row 1 Row 2 Row 1 Row 2 Row 

0.5 0.3 0.1 115.0 135.7 157.8 148.6 5.4 7.7 

1 1.0 0.3 120.3 144.6 167.7 162.3 6.0 8.6 

2 3.5 1.0 123.5 149.8 173.5 170.6 6.3 9.2 

3 7.5 2.1 124.7 151.7 175.6 173.6 6.5 9.4 

4 12.7 3.5 125.4 152.7 176.6 175.1 6.5 9.5 

5 -- 5.3 -- 153.3 -- 176.1 -- 9.6 

0.5 0.3 0.1 105.7 123.2 152.9 141.4 6.6 9.5 

1 1.0 0.3 111.3 133.3 164.6 157.2 7.5 11.1 

2 3.5 1.0 114.8 139.7 171.7 167.5 8.1 12.1 

3 7.5 2.1 116.1 142.2 174.3 171.4 8.3 12.5 

4 12.7 3.5 116.8 143.4 175.7 173.4 8.4 12.7 

5 -- 5.3 -- 144.3 -- 174.7 -- 12.9 

0.5 0.3 0.1 99.7 114.5 149.2 136.2 7.5 10.7 

1 1.0 0.3 105.2 125.1 162.1 153.3 8.7 13.0 

2 3.5 1.0 108.9 132.2 170.2 165.1 9.5 14.6 

3 7.5 2.1 110.3 135.0 173.3 169.6 9.8 15.2 

4 12.7 3.5 111.0 136.5 174.9 172.0 10.0 15.5 

5 -- 5.3 -- 137.4 -- 173.5 -- 15.7 

0.5 0.3 0.1 95.4 108.2 146.3 132.3 8.2 11.7 

1 1.0 0.3 100.9 118.8 160.1 150.1 9.7 14.6 

2 3.5 1.0 104.5 126.3 169.0 163.0 10.7 16.6 

3 7.5 2.1 106.0 129.3 172.4 168.1 11.1 17.4 

4 12.7 3.5 106.7 130.9 174.2 170.8 11.3 17.8 

5 -- 5.3 -- 131.9 -- 172.5 -- 18.1 

0.5 0.3 0.1 92.2 103.3 143.9 129.2 8.8 12.5 

1 1.0 0.3 97.5 113.8 158.4 147.5 10.6 15.9 

2 3.6 1.0 101.1 121.5 167.9 161.2 11.7 18.4 

3 7.5 2.1 102.6 124.6 171.6 166.7 12.2 19.4 

4 12.7 3.5 103.4 126.3 173.6 169.8 12.5 19.9 

5 -- 5.3 -- 127.4 -- 171.7 -- 20.3 

0.5 0.3 0.1 89.6 99.5 141.9 126.7 9.3 13.1 

1 1.0 0.3 94.8 109.8 156.9 145.3 11.3 17.0 

2 3.6 1.0 98.4 117.5 167.0 159.6 12.7 19.9 

3 7.5 2.1 99.9 120.7 170.9 165.5 13.2 21.1 

4 12.7 3.6 100.7 122.5 173.0 168.8 13.5 21.8 

5 -- 5.3 -- 123.7 -- 170.9 -- 22.2 

0.5 0.3 0.1 87.5 96.4 140.1 124.6 9.7 13.6 

1 1.0 0.3 92.5 106.4 155.5 143.3 11.9 17.9 

2 3.6 1.0 96.1 114.1 166.1 158.2 13.5 21.3 

3 7.5 2.1 97.6 117.4 170.3 164.5 14.1 22.7 

4 12.7 3.6 98.4 119.2 172.6 167.9 14.5 23.5 

5 -- 5.3 -- 120.4 -- 170.1 -- 24.0 

NOTES: 

1. Data is based on 180°F entering water and 65°F entering air temperature at sea level. See selection procedure for other 

conditions. 

2. For optimum diffuser performance in overhead heating applications, the supply air temperature should be within 20°F of the 

desired space temperature. This typically requires a higher air capacity which provides higher air motion in the space, 

increasing thermal comfort. The hot water coil should be selected with this in mind, keeping the LA T as low as possible. 



ENVIRO-TEC 25




MODEL CFR-WC UNIT SIZES 0606, 0806, 0611, 0811, 1011 

Rate 

(CFM) 

200 

300 

400 

500 

600 

700 

800 

900 

AIRFLOW 

Air PD 

(IN. W.G.) 

1 Row 0.01 

2 Row 0.02 

1 Row 0.02 

2 Row 0.03 

1 Row 0.03 

2 Row 0.06 

1 Row 0.04 

2 Row 0.08 

1 Row 0.06 

2 Row 0.12 

1 Row 0.08 

2 Row 0.15 

1 Row 0.10 

2 Row 0.19 

1 Row 0.12 

2 Row 0.24 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 


(MBH) 


0.5 0.4 0.1 107.4 124.1 142.5 127.8 9.2 12.8 

1 1.2 0.4 114.1 136.1 158.2 148.5 10.6 15.4 

2 4.4 1.2 118.4 143.5 168.1 162.5 11.6 17.0 

3 9.2 2.6 120.0 146.3 171.8 167.9 11.9 17.6 

4 15.5 4.4 120.9 147.7 173.8 170.8 12.1 17.9 

5 - 6.6 - 148.6 - 172.6 - 18.1 

0.5 0.4 0.1 98.5 111.3 135.5 118.7 10.9 15.1 

1 1.2 0.4 105.3 124.0 153.2 140.8 13.1 19.2 

2 4.4 1.2 109.7 132.6 165.1 157.5 14.5 22.0 

3 9.2 2.6 111.5 136.0 169.6 164.2 15.1 23.1 

4 15.5 4.4 112.5 137.8 172.1 167.8 15.4 23.7 

5 - 6.6 - 139.0 - 170.1 - 24.0 

0.5 0.4 0.1 93.0 103.2 130.5 112.7 12.1 16.5 

1 1.2 0.4 99.5 115.6 149.4 135.2 14.9 21.9 

2 4.4 1.2 104.0 124.8 162.7 153.5 16.9 25.9 

3 9.2 2.6 105.8 128.5 167.9 161.2 17.7 27.5 

4 15.5 4.4 106.8 130.5 170.7 165.4 18.1 28.4 

5 - 6.6 - 131.8 - 168.1 - 28.9 

0.5 0.4 0.1 89.1 97.5 126.7 108.5 13.1 17.6 

1 1.2 0.4 95.4 109.4 146.4 130.9 16.4 24.0 

2 4.4 1.2 99.8 118.7 160.6 150.2 18.9 29.1 

3 9.2 2.6 101.7 122.6 166.4 158.7 19.9 31.2 

4 15.5 4.4 102.7 124.8 169.5 163.4 20.4 32.4 

5 - 6.6 - 126.2 - 166.4 - 33.1 

0.5 0.4 0.1 86.2 93.3 123.7 105.3 13.8 18.4 

1 1.2 0.4 92.2 104.6 143.8 127.5 17.7 25.7 

2 4.4 1.2 96.6 113.9 158.9 147.5 20.6 31.8 

3 9.2 2.6 98.5 117.9 165.1 156.5 21.7 34.4 

4 15.5 4.4 99.5 120.2 168.5 161.6 22.4 35.9 

5 - 6.6 - 121.6 - 164.9 - 36.8 

0.5 0.4 0.1 84.0 90.1 121.2 102.8 14.4 19.0 

1 1.2 0.4 89.7 100.8 141.7 124.7 18.7 27.1 

2 4.4 1.2 94.0 110.0 157.4 145.1 22.0 34.1 

3 9.2 2.6 95.9 114.1 164.0 154.6 23.4 37.2 

4 15.5 4.4 96.9 116.4 167.6 160.0 24.2 38.9 

5 - 6.6 - 117.9 - 163.5 - 40.1 

0.5 0.4 0.1 82.2 87.5 119.1 100.8 14.9 19.5 

1 1.2 0.4 87.7 97.7 139.8 122.3 19.7 28.3 

2 4.4 1.2 91.9 106.7 156.1 143.1 23.3 36.1 

3 9.2 2.6 93.7 110.8 163.0 152.9 24.9 39.7 

4 15.5 4.4 94.7 113.1 166.8 158.6 25.8 41.7 

5 - 6.6 - 114.6 - 162.3 - 43.0 

0.5 0.4 0.1 80.8 85.4 117.4 99.1 15.4 19.9 

1 1.2 0.4 86.0 95.1 138.1 120.3 20.5 29.3 

2 4.4 1.2 90.1 103.9 154.9 141.3 24.5 37.9 

3 9.2 2.6 91.9 108.0 162.0 151.4 26.2 41.9 

4 15.5 4.4 92.9 110.3 166.0 157.4 27.2 44.2 

5 - 6.6 - 111.9 - 161.3 - 45.7 

NOTES: 


conditions. 






26 ENVIRO-TEC



MODEL CFR-WC UNIT SIZES 0818, 1018, 1218, 1021, 1221, 1421 

Rate 

(CFM) 

700 

800 

1000 

1200 

1400 

1600 

1800 

2000 

AIRFLOW 

Air PD 

(IN. W.G.) 

1 Row 0.04 

2 Row 0.09 

1 Row 0.05 

2 Row 0.11 

1 Row 0.08 

2 Row 0.16 

1 Row 0.11 

2 Row 0.23 

1 Row 0.15 

2 Row 0.30 

1 Row 0.19 

2 Row 0.38 

1 Row 0.23 

2 Row 0.47 

1 Row 0.28 

2 Row 0.56 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 


(MBH) 


0.5 0.4 0.1 86.4 92.7 113.8 94.8 16.3 21.0 

1 1.4 0.4 93.2 105.2 136.3 118.0 21.4 30.5 

2 4.9 1.4 98.4 115.7 154.1 140.7 25.3 38.5 

3 10.3 2.9 100.5 120.4 161.6 151.3 26.9 42.0 

4 17.4 4.9 101.7 122.9 165.7 157.5 27.8 43.9 

5 - 7.4 - 124.6 - 161.5 - 45.2 

0.5 0.4 0.1 84.4 89.8 111.5 92.6 16.8 21.5 

1 1.4 0.4 91.0 101.7 134.1 115.2 22.5 31.8 

2 4.9 1.4 96.0 112.2 152.5 138.2 26.9 40.9 

3 10.3 2.9 98.2 116.9 160.4 149.3 28.7 44.9 

4 17.4 4.9 99.3 119.5 164.7 155.8 29.8 47.2 

5 - 7.4 - 121.2 - 160.0 - 48.7 

0.5 0.4 0.1 81.4 85.6 107.7 89.4 17.8 22.3 

1 1.4 0.4 87.4 96.4 130.4 110.9 24.3 34.0 

2 4.9 1.4 92.3 106.5 149.7 134.1 29.6 44.9 

3 10.3 2.9 94.4 111.2 158.2 145.9 31.9 50.0 

4 17.4 4.9 95.6 113.9 163.0 152.9 33.1 53.0 

5 - 7.4 - 115.7 - 157.5 - 54.9 

0.5 0.4 0.1 79.2 82.6 104.8 87.1 18.5 22.9 

1 1.4 0.4 84.8 92.4 127.4 107.5 25.8 35.7 

2 4.9 1.4 89.5 102.1 147.4 130.8 31.9 48.2 

3 10.3 2.9 91.6 106.7 156.4 143.0 34.5 54.2 

4 17.4 4.9 92.7 109.5 161.5 150.4 36.1 57.8 

5 - 7.4 - 111.3 - 155.3 - 60.1 

0.5 0.4 0.1 77.6 80.4 102.5 85.3 19.1 23.4 

1 1.4 0.4 82.8 89.4 124.9 104.9 27.0 37.0 

2 4.9 1.4 87.3 98.6 145.4 128.1 33.8 50.9 

3 10.3 2.9 89.3 103.1 154.8 140.6 36.9 57.9 

4 17.4 4.9 90.5 105.9 160.2 148.3 38.6 62.0 

5 - 7.4 - 107.7 - 153.5 - 64.7 

0.5 0.4 0.1 76.3 78.7 100.6 83.9 19.5 23.7 

1 1.4 0.4 81.2 87.0 122.9 102.7 28.0 38.0 

2 4.9 1.4 85.5 95.7 143.7 125.7 35.5 53.2 

3 10.3 2.9 87.5 100.2 153.4 138.5 38.9 61.0 

4 17.4 4.9 88.6 102.9 159.0 146.4 40.9 65.7 

5 - 7.4 - 104.7 - 151.8 - 68.8 

0.5 0.4 0.1 75.2 77.3 99.0 82.8 19.9 24.0 

1 1.4 0.4 79.8 85.0 121.0 100.9 28.9 38.9 

2 4.9 1.4 84.0 93.3 142.2 123.7 37.0 55.2 

3 10.3 2.9 85.9 97.7 152.2 136.6 40.8 63.7 

4 17.4 4.9 87.0 100.3 158.0 144.8 42.9 68.9 

5 - 7.4 - 102.1 - 150.3 - 72.4 

0.5 0.4 0.1 74.4 76.2 97.7 81.9 20.3 24.2 

1 1.4 0.4 78.7 83.3 119.4 99.4 29.7 39.7 

2 4.9 1.4 82.7 91.3 140.8 121.9 38.4 57.0 

3 10.3 2.9 84.6 95.5 151.0 134.9 42.4 66.2 

4 17.4 4.9 85.7 98.2 157.0 143.3 44.8 71.9 

5 - 7.4 - 99.9 - 149.0 - 75.7 

NOTES: 


conditions. 






ENVIRO-TEC 27




Rate 

(CFM) 

1000 

1200 

1400 

1600 

1800 

2000 

2200 

2400 

AIRFLOW 

Air PD 

(IN. W.G.) 

1 Row 0.03 

2 Row 0.06 

1 Row 0.04 

2 Row 0.08 

1 Row 0.05 

2 Row 0.11 

1 Row 0.07 

2 Row 0.13 

1 Row 0.08 

2 Row 0.17 

1 Row 0.10 

2 Row 0.20 

1 Row 0.12 

2 Row 0.24 

1 Row 0.14 

2 Row 0.28 

MODEL CFR-WC UNIT SIZES 1224, 1424 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 


(MBH) 


0.5 0.6 0.2 84.5 88.3 94.4 77.7 21.1 25.3 

1 2.0 0.6 92.7 102.2 118.9 98.1 30.0 40.3 

2 7.1 2.0 99.4 115.5 141.9 124.3 37.3 54.7 

3 14.6 4.2 102.4 121.5 152.4 138.3 40.5 61.2 

4 24.5 7.0 104.0 125.0 158.3 146.8 42.2 65.0 

5 - 10.5 - 127.2 - 152.4 - 67.3 

0.5 0.6 0.2 81.8 84.8 91.2 75.6 21.9 25.8 

1 2.0 0.6 89.5 97.5 115.2 94.3 31.8 42.2 

2 7.1 2.0 96.0 110.3 138.8 120.0 40.3 58.9 

3 14.6 4.2 98.9 116.5 149.9 134.5 44.1 66.9 

4 24.5 7.0 100.6 120.0 156.3 143.4 46.3 71.5 

5 - 10.5 - 122.3 - 149.5 - 74.5 

0.5 0.6 0.2 79.8 82.2 88.7 74.2 22.5 26.2 

1 2.0 0.6 87.0 93.8 112.1 91.3 33.4 43.7 

2 7.1 2.0 93.3 106.2 136.1 116.5 43.0 62.4 

3 14.6 4.2 96.2 112.3 147.7 131.2 47.3 71.7 

4 24.5 7.0 97.8 115.9 154.5 140.6 49.8 77.2 

5 - 10.5 - 118.3 - 146.9 - 80.8 

0.5 0.6 0.2 78.3 80.2 86.7 73.1 23.0 26.4 

1 2.0 0.6 85.0 90.9 109.6 89.0 34.6 44.9 

2 7.1 2.0 91.1 102.7 133.8 113.5 45.2 65.4 

3 14.6 4.2 93.9 108.8 145.8 128.4 50.1 75.9 

4 24.5 7.0 95.6 112.4 152.9 138.0 53.0 82.2 

5 - 10.5 - 114.8 - 144.7 - 86.3 

0.5 0.6 0.2 77.0 78.7 85.1 72.2 23.4 26.6 

1 2.0 0.6 83.3 88.5 107.3 87.0 35.7 45.9 

2 7.1 2.0 89.2 99.8 131.8 110.9 47.3 67.9 

3 14.6 4.2 92.0 105.8 144.1 125.9 52.7 79.6 

4 24.5 7.0 93.6 109.4 151.4 135.8 55.8 86.6 

5 - 10.5 - 111.8 - 142.6 - 91.3 

0.5 0.6 0.2 76.0 77.4 83.7 71.5 23.8 26.8 

1 2.0 0.6 81.9 86.5 105.4 85.4 36.7 46.7 

2 7.1 2.0 87.7 97.4 129.9 108.7 49.1 70.1 

3 14.6 4.2 90.4 103.2 142.5 123.7 55.0 82.8 

4 24.5 7.0 92.0 106.8 150.1 133.7 58.4 90.6 

5 - 10.5 - 109.3 - 140.8 - 95.9 

0.5 0.6 0.2 75.1 76.3 82.6 71.0 24.0 27.0 

1 2.0 0.6 80.8 84.9 103.7 84.1 37.5 47.3 

2 7.1 2.0 86.3 95.2 128.3 106.8 50.7 72.0 

3 14.6 4.2 89.0 101.0 141.1 121.8 57.1 85.7 

4 24.5 7.0 90.5 104.5 148.9 131.9 60.8 94.2 

5 - 10.5 - 107.0 - 139.1 - 100.0 

0.5 0.6 0.2 74.3 75.4 81.6 70.5 24.3 27.1 

1 2.0 0.6 79.7 83.4 102.2 82.9 38.3 47.9 

2 7.1 2.0 85.1 93.4 126.8 105.0 52.2 73.8 

3 14.6 4.2 87.7 99.0 139.8 120.0 59.0 88.3 

4 24.5 7.0 89.3 102.5 147.7 130.3 63.1 97.5 

5 - 10.5 - 104.9 - 137.6 - 103.8 

NOTES: 


conditions. 






28 ENVIRO-TEC



Rate 

(CFM) 

1500 

1700 

1900 

2100 

2300 

2500 

2700 

2900 

3300 

3700 

AIRFLOW 

MODEL CFR-WC UNIT SIZES 1230, 1430, 1630, 1440, 1640 

Air PD 

(IN. W.G.) 

1 Row 0.03 

2 Row 0.06 

1 Row 0.04 

2 Row 0.08 

1 Row 0.05 

2 Row 0.10 

1 Row 0.06 

2 Row 0.12 

1 Row 0.07 

2 Row 0.14 

1 Row 0.08 

2 Row 0.16 

1 Row 0.09 

2 Row 0.18 

1 Row 0.10 

2 Row 0.21 

1 Row 0.13 

2 Row 0.26 

1 Row 0.16 

2 Row 0.32 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 


(MBH) 


0.5 0.7 0.1 80.1 81.8 80.9 69.5 24.5 27.3 

1 2.5 0.7 88.3 94.4 103.2 83.2 37.8 47.8 

2 8.7 2.5 95.9 108.6 128.8 107.9 50.2 70.9 

3 17.9 5.2 99.4 115.9 141.9 123.8 55.9 82.7 

4 29.9 8.6 101.4 120.1 149.7 134.3 59.2 89.6 

5 -- 12.8 -- 122.9 -- 141.5 -- 94.2 

0.5 0.7 0.1 78.5 79.9 79.2 68.8 24.9 27.5 

1 2.5 0.7 86.2 91.5 100.6 81.1 39.1 48.8 

2 8.7 2.5 93.6 105.2 126.3 104.9 52.6 73.9 

3 17.9 5.2 97.1 112.3 139.8 120.8 59.1 87.2 

4 29.9 8.6 99.1 116.7 147.9 131.5 62.8 95.1 

5 -- 12.8 -- 119.5 -- 139.0 -- 100.4 

0.5 0.7 0.1 77.3 78.4 77.8 68.3 25.2 27.6 

1 2.5 0.7 84.5 89.1 98.4 79.5 40.2 49.6 

2 8.7 2.5 91.7 102.2 124.1 102.3 54.9 76.5 

3 17.9 5.2 95.1 109.3 137.8 118.1 61.9 91.1 

4 29.9 8.6 97.1 113.6 146.2 129.0 66.1 100.1 

5 -- 12.8 -- 116.5 -- 136.7 -- 106.0 

0.5 0.7 0.1 76.2 77.2 76.7 67.8 25.5 27.7 

1 2.5 0.7 83.1 87.1 96.5 78.1 41.1 50.3 

2 8.7 2.5 90.0 99.6 122.1 100.0 56.8 78.8 

3 17.9 5.2 93.4 106.6 136.1 115.8 64.5 94.7 

4 29.9 8.6 95.4 110.9 144.7 126.7 69.1 104.5 

5 -- 12.8 -- 113.9 -- 134.6 -- 111.1 

0.5 0.7 0.1 75.3 76.2 75.7 67.5 25.8 27.8 

1 2.5 0.7 81.8 85.4 94.8 77.0 42.0 50.9 

2 8.7 2.5 88.5 97.4 120.3 98.0 58.6 80.7 

3 17.9 5.2 91.9 104.3 134.5 113.7 66.9 97.8 

4 29.9 8.6 93.8 108.6 143.3 124.7 71.8 108.5 

5 -- 12.8 -- 111.5 -- 132.7 -- 115.8 

0.5 0.7 0.1 74.6 75.3 74.9 67.2 26.0 27.9 

1 2.5 0.7 80.8 84.0 93.3 76.0 42.7 51.4 

2 8.7 2.5 87.3 95.5 118.6 96.3 60.3 82.5 

3 17.9 5.2 90.5 102.2 133.0 111.8 69.1 100.6 

4 29.9 8.6 92.5 106.4 142.0 122.8 74.4 112.2 

5 -- 12.8 -- 109.4 -- 131.0 -- 120.1 

0.5 0.7 0.1 73.9 74.6 74.2 67.0 26.1 27.9 

1 2.5 0.7 79.8 82.7 92.0 75.2 43.4 51.8 

2 8.7 2.5 86.1 93.7 117.1 94.8 61.8 84.0 

3 17.9 5.2 89.3 100.3 131.6 110.0 71.1 103.2 

4 29.9 8.6 91.3 104.5 140.8 121.1 76.8 115.5 

5 -- 12.8 -- 107.4 -- 129.4 -- 124.1 

0.5 0.7 0.1 73.4 73.9 73.6 66.8 26.3 28.0 

1 2.5 0.7 79.0 81.6 90.8 74.5 44.0 52.1 

2 8.7 2.5 85.1 92.2 115.7 93.4 63.1 85.4 

3 17.9 5.2 88.2 98.6 130.3 108.5 73.0 105.5 

4 29.9 8.6 90.2 102.8 139.6 119.6 79.0 118.6 

5 -- 12.8 -- 105.7 -- 127.9 -- 127.8 

0.5 0.7 0.1 72.4 72.8 72.6 66.5 26.5 28.1 

1 2.6 0.7 77.6 79.7 88.8 73.3 45.0 52.7 

2 8.8 2.5 83.3 89.6 113.3 91.0 65.6 87.8 

3 18.0 5.2 86.4 95.7 128.0 105.7 76.4 109.7 

4 30.1 8.7 88.2 99.7 137.6 116.8 83.1 124.2 

5 -- 13.0 -- 102.6 -- 125.2 -- 134.4 

0.5 0.7 0.1 71.7 72.0 71.8 66.3 26.7 28.1 

1 2.6 0.7 76.4 78.3 87.1 72.4 45.8 53.2 

2 8.8 2.6 81.9 87.4 111.1 89.0 67.7 89.7 

3 18.1 5.3 84.8 93.2 126.0 103.4 79.5 113.2 

4 30.2 8.8 86.6 97.2 135.7 114.4 86.7 129.0 

5 -- 13.0 -- 100.0 -- 122.8 -- 140.2 

NOTES: 


conditions. 






ENVIRO-TEC 29




MODEL CFR-WC UNIT SIZES 1644, 1844 

Rate 

(CFM) 

2400 

2800 

3200 

3600 

4000 

4400 

4600 

AIRFLOW 

Air PD 

(IN. W.G.) 

1 Row 0.06 

2 Row 0.12 

1 Row 0.08 

2 Row 0.16 

1 Row 0.10 

2 Row 0.21 

1 Row 0.13 

2 Row 0.26 

1 Row 0.15 

2 Row 0.31 

1 Row 0.18 

2 Row 0.37 

1 Row 0.20 

2 Row 0.40 

WATER FLOW 

CAPACITY 

LAT (°F) 

LWT (°F) 


(MBH) 


0.5 0.8 0.1 75.1 75.8 74.0 66.8 26.2 28.0 

1 2.7 0.8 81.7 84.9 92.1 75.1 43.4 51.8 

2 9.3 2.7 88.6 97.2 117.5 95.2 61.4 83.6 

3 19.0 5.5 92.1 104.3 132.1 110.8 70.5 102.1 

4 31.8 9.2 94.2 108.8 141.2 122.0 75.9 113.8 

5 -- 13.7 -- 111.8 -- 130.3 -- 121.8 

0.5 0.8 0.1 73.7 74.3 72.7 66.5 26.5 28.1 

1 2.7 0.8 79.7 82.3 89.4 73.5 44.7 52.6 

2 9.3 2.7 86.3 93.6 114.4 92.0 64.5 86.7 

3 19.1 5.5 89.6 100.4 129.2 107.2 74.7 107.4 

4 31.8 9.2 91.7 104.8 138.7 118.5 80.9 120.8 

5 -- 13.7 -- 107.9 -- 126.9 -- 130.1 

0.5 0.8 0.1 72.7 73.1 71.7 66.2 26.8 28.1 

1 2.7 0.8 78.2 80.3 87.3 72.4 45.7 53.2 

2 9.3 2.7 84.4 90.7 111.7 89.5 67.1 89.2 

3 19.1 5.6 87.6 97.2 126.7 104.3 78.4 111.8 

4 31.9 9.3 89.6 101.6 136.4 115.5 85.3 126.7 

5 -- 13.8 -- 104.6 -- 124.1 -- 137.2 

0.5 0.8 0.1 71.9 72.2 70.9 66.0 27.0 28.2 

1 2.7 0.8 77.0 78.8 85.5 71.5 46.6 53.7 

2 9.3 2.7 82.8 88.4 109.5 87.5 69.4 91.3 

3 19.2 5.6 85.9 94.6 124.5 101.8 81.6 115.5 

4 32.0 9.3 87.9 98.8 134.5 112.9 89.2 131.8 

5 -- 13.8 -- 101.8 -- 121.5 -- 143.5 

0.5 0.8 0.1 71.3 71.5 70.3 65.9 27.1 28.2 

1 2.7 0.8 75.9 77.5 84.0 70.7 47.4 54.0 

2 9.3 2.7 81.5 86.5 107.5 85.8 71.3 93.0 

3 19.2 5.6 84.5 92.4 122.6 99.7 84.5 118.7 

4 32.0 9.3 86.4 96.5 132.7 110.7 92.7 136.3 

5 -- 13.8 -- 99.4 -- 119.3 -- 149.0 

0.5 0.8 0.1 70.7 70.9 69.8 65.8 27.3 28.3 

1 2.7 0.8 75.1 76.4 82.8 70.2 48.0 54.3 

2 9.3 2.7 80.3 84.8 105.7 84.3 73.1 94.4 

3 19.2 5.6 83.3 90.5 120.9 97.8 87.1 121.5 

4 32.1 9.3 85.1 94.4 131.1 108.7 95.9 140.3 

5 -- 13.9 -- 97.3 -- 117.3 -- 153.9 

0.5 0.8 0.1 70.5 70.7 69.5 65.7 27.3 28.3 

1 2.7 0.8 74.7 75.9 82.2 69.9 48.3 54.4 

2 9.4 2.7 79.8 84.1 104.9 83.7 73.9 95.1 

3 19.2 5.6 82.7 89.6 120.1 96.9 88.3 122.7 

4 32.1 9.3 84.5 93.5 130.3 107.8 97.4 142.1 

5 -- 13.9 -- 96.3 -- 116.4 -- 156.2 

NOTES: 


conditions. 






30 ENVIRO-TEC


GUIDE SPECIFICATIONS 

GENERAL 

Furnish and install ENVIRO-TEC ® Model CFR, or equal, 

Series Flow Constant Volume Fan Powered Terminals 

of the sizes and capacities scheduled. Units shall be 

ETL listed. Terminals with electric heat shall be listed 

as an assembly. Separate listings for the terminal and 

electric heater are not acceptable. Terminals shall 

include a single point electrical connection. Terminal 

units shall be ARI certified and bear the ARI 880 seal. 

The entire unit shall be designed and built as a single 

unit. Field-assembled components or built-up terminals 

employing components from multiple manufacturers 

are not acceptable. 

CONSTRUCTION 

Terminals shall be constructed of not less than 22 

gauge galvanized steel, able to with-stand a 125 hour 

salt spray test per ASTM B-117. Stainless steel casings, 

or galvannealed steel casings with a baked 

enamel paint finish, may be used as an alternative. The 

terminal casing shall be mechanically assembled (spotwelded 

casings are not acceptable). 

Casing shall be internally lined with 3/4" thick fiberglass 

insulation, rated for a maximum air velocity of 5000 f.p.m. 

Maximum thermal conductivity shall be .24 (BTU • in) / 

(hr • ft 2 • °F). Insulation must meet all requirements of 

ASTM C1071 (including C665), UL 181 for erosion, and 

carry a 25/50 rating for flame spread/smoke developed 

per ASTM E-84, UL 723 and NFPA 90A. Raw insulation 

edges on the discharge of the unit must be covered with 

metal liner to eliminate flaking of insulation during field 

duct connections. Simple "buttering" of raw edges with 

an approved sealant is not acceptable. 

Casing shall have full bottom access to gain access to 

the primary air valve and fan assembly . The opening 

shall be sufficiently large to allow complete removal of 

the fan if necessary. The casing shall be constructed 

in a manner to provide a single rectangular discharge 

collar. Multiple discharge openings are not acceptable. 

All appurtenances including control assemblies, control 

enclosures, hot water heating coils, and electric heating 

coils shall not extend beyond the top or bottom of the 

unit casing. 

SOUND 

The terminal manufacturer shall provide ARI certified 

sound power data for radiated and discharge sound. 

The sound levels shall not exceed the octave band 

sound power levels indicated on the schedule. If the 

sound data does not meet scheduled criteria, the contractor 

shall be responsible for the provision and 

installation of any additional equipment or material 

necessary to achieve the scheduled sound performance. 

PRIMARY AIR VALVE 

The primary air valve shall consist of a minimum 22 

gauge cylindrical body that includes embossment rings 

for rigidity. The damper blade shall be connected to a 

solid shaft by means of an integral molded sleeve which 

does not require screw or bolt fasteners. The shaft 

shall be manufactured of a low thermal conducting 

composite material, and include a molded damper position 

indicator visible from the exterior of the unit. The 

damper shall pivot in self lubricating bearings. The 

damper actuator shall be mounted on the exterior of 

the terminal for ease of service. The valve assembly 

shall include internal mechanical stops for both full open 

and closed positions. The damper blade seal shall be 

secured without use of adhesives. The air valve leakage 

shall not exceed 1% of maximum inlet rated airflow 

at 3” W.G. inlet pressure. 

PRIMARY AIRFLOW SENSOR 

For inlet diameters 6" or greater, the differential pressure 

airflow sensor shall traverse the duct along two perpendicular 

diameters. Cylindrically shaped inlets shall utilize 

the equal cross sectional area or log-linear traverse 

method. Single axis sensor shall not be acceptable for 

duct diameters 6" or larger. A minimum of 12 total pressure 

sensing points shall be utilized. The total pressure 

inputs shall be averaged using a pressure chamber 

located at the center of the sensor. A sensor that delivers 

the differential pressure signal from one end of the 

sensor is not acceptable. The sensor shall output an 

amplified differential pressure signal that is at least 2.3 

times the equivalent velocity pressure signal obtained 

from a conventional pitot tube. The sensor shall develop 

a dif ferential pressure of 0.015" w .g. at an air 

velocity of < 325 FPM. Documentation shall be submitted 

which substantiates this requirement. Balancing taps 

and airflow calibration charts shall be provided for field 

airflow measurements. 

FAN ASSEMBLY 

The unit fan shall utilize a forward curved, dynamically 

balanced, galvanized wheel with a direct drive motor . 

The motor shall be permanent split capacitor type with 

three separate horsepower taps. Single speed motors 

ENVIRO-TEC 31




with electronic speed controllers are not acceptable. 

The fan motor shall be unpluggable from the electrical 

leads at the motor case for simplified removal (open 

frame motors only). The motor shall utilize permanently 

lubricated sleeve type bearings, include thermal overload 

protection and be suitable for use with electronic and/or 

mechanical fan speed controllers. The motor shall be 

mounted to the fan housing using torsion isolation 

mounts properly isolated to minimize vibration transfer. 

The terminal shall utilize an electronic (SCR) fan speed 

controller for aid in balancing the fan capacity . The 

speed controller shall have a turn down stop to prevent 

possibility of harming motor bearings. 

HOT WATER COIL 

Terminal shall include an integral hot water coil where 

indicated on the plans. The coil shall be manufactured 

by the terminal unit manufacturer and shall have a 

minimum 22 gauge galvanized sheet metal casing. 

Stainless steel casings, or galvannealed steel casings 

with a baked enamel paint finish, may be used as an 

alternative. Coil to be constructed of pure aluminum 

fins with full fin collars to assure accurate fin spacing 

and maximum tube contact. Fins shall be spaced with 

a minimum of 10 per inch and mechanically fixed to 

seamless copper tubes for maximum heat transfer. 

Each coil shall be hydrostatically tested at a minimum 

of 450 PSIG under water, and rated for a maximum 300 

PSIG working pressure at 200°F. Coils shall incorporate 

a built in, flush mounted access plate, allowing top 

and bottom access to coil. 

ELECTRIC HEATERS 

Terminal shall include an integral electric heater where 

indicated on the plans. The heater cabinet shall be 

constructed of not less than 20 gauge galvanized steel. 

Stainless steel cabinets, or galvannealed steel casings 

with a baked enamel paint finish, may be used as an 

alternative. Heater shall have a hinged access panel 

for entry to the controls. 

A power disconnect shall be furnished to render the 

heater non-operational. Heater shall be furnished with 

all controls necessary for safe operation and full compliance 

with UL 1995 and National Electric Code 

requirements. 

Heater shall have a single point electrical connection. 

It shall include a primary disc-type automatic reset high 

temperature limit, secondary high limit(s), Ni-Chrome 

elements, and fusing per UL and NEC. Heater shall 

have complete wiring diagram with label indicating 

power requirement and KW output. Heater shall be 

interlocked with fan terminal so as to preclude operation 

of the heater when the fan is not running. 

OPTIONS 

Foil Faced Insulation 

Insulation shall be covered with scrim backed foil facing. 

All insulation edges shall be covered with foil or metal 

nosing. Insulation shall meet ASTM C1136 and ASTM 

C665 for mold, mildew and humidity resistance. 

Elastomeric Closed Cell Foam Insulation 

Provide Elastomeric Closed Cell Foam Insulation in lieu 

of standard. Insulation shall conform to UL 181 for 

erosion and NFPA 90A for fire, smoke and melting, and 

comply with a 25/50 Flame Spread and Smoke 

Developed Index per ASTM E-84 or UL 723. Additionally, 

insulation shall comply with Antimicrobial Performance 

Rating of 0, no observed growth, per ASTM G-21. 

Polyethylene insulation is not acceptable. 

Double Wall Construction 

The terminal casing shall be double wall construction 

using a 22 gauge galvanized metal liner covering all 

insulation. 

Low Temperature Construction 

Terminals shall be designed for use with primary airflow 

temperatures as low as 46°F and maximum ceiling 

plenum conditions of 78°F and 60% R.H. In addition 

to other design criteria, the primary air valve shall be 

thermally isolated from the terminal casing. The 

damper shaft shall be made from non-conducting thermoplastic 

composite material. Metal shafts will not be 

acceptable. 

Filters 

Terminals shall include a 1" thick disposable fiberglass 

filter. Filter shall be secured with quick release clips, 

allowing removal without horizontal sliding. 

ECM Fan Motor 

Fan motor shall be ECM. Motor shall be brushless 

DC controlled by an integral controller / inverter that 

operates the wound stator and senses rotor position to 

electronically commutate the stator . Motor shall be 

permanent magnet type with near-zero rotor losses 

designed for synchronous rotation. The motor shall 

utilize permanently lubricated ball bearings. Motor shall 

maintain minimum 70% efficiency over the entire operating 

range. Motor speed control shall be accomplished 

through a PWM (pulse width modulation) controller 

specifically designed for compatibility with the ECM. 

32 ENVIRO-TEC



The speed controller shall have terminals for field 

verification of fan capacity utilizing a digital volt meter. 

A calibration graph shall be supplied indicating Fan 

CFM verses DC Volts. 

Piping Packages 

Provide a standard factory assembled non-insulated 

valve piping package to consist of a 2 way , on/of f, 

motorized electric control valve and two ball isolation 

valves. Control valves are piped normally closed to the 

coil. Maximum entering water temperature on the control 

valve shall be 200°F . The maximum close-of f 

pressure is 40 PSIG (1/2") or 20 PSIG (3/4"). Maximum 

operating pressure shall be 300 PSIG. 

Option: Provide 3-wire floating point modulating control 

valve (fail-in-place) in lieu of standard 2-position control 

valve with factory assembled valve piping package. 

Option: Provide high pressure close-of f actuators for 

2-way, on/off control valves. Maximum close-off pressure 

is 50 PSIG (1/2") or 25 PSIG (3/4)". 

Option: Provide either a fixed or adjustable flow control 

device for each piping package. 

Option: Provide unions and/or pressure-temperature 

ports for each piping package. 

Piping package shall be completely factory assembled, 

including interconnecting pipe, and shipped separate 

from the unit for field installation on the coil, so as to 

minimize the risk of freight damage. 

CONTROLS 

Analog Electronic Controls 

Furnish and install Series 7000 Pressure Independent 

Analog Electronic Control System where indicated on 

the plans and in the specifications. The complete system 

shall be fully operational and include the 

following: 

• Pressure independent Series 7000 analog electronic 

zone controllers with integral differential pressure 

transducer. 

• Analog electronic wall thermostat 

• Electronic air valve actuator 

• 24 VAC control transformers 

• Air pressure switches as required 

• Electronic duct temperature sensors as required 

Refer to Series 7000 Analog Electronic controls selection 

guide for detailed guide specifications. 

Pneumatic Controls 

Units shall be controlled by a pneumatic dif ferential 

pressure reset volume controller . Controller shall be 

capable of pressure independent operation down to 

0.03 inches W .G. dif ferential pressure and shall be 

factory set to the specified airflow (CFM). Controller 

shall not exceed 11.5 scim (Standard Cubic Inches per 

Minute) air consumption @ 20 PSIG. 

Unit primary air valve shall modulate in response to the 

room mounted thermostat and shall maintain airflow in 

relation to thermostat pressure regardless of system 

static pressure changes. An airflow (CFM) curve shall 

be af fixed to the terminal unit expressing dif ferential 

pressure vs. CFM. Pressure taps shall be provided for 

field use and ease of balancing. 

Terminal unit manufacturer shall supply and manufacture 

a 5 to 10 PSIG pneumatic actuator capable of a 

minimum of 45 in. lbs. of torque. 

Actual sequence of operation is shown on the contract 

drawings. Terminal unit manufacturer shall coordinate, 

where necessary , with the Temperature Control 

Contractor. 

• Single duct, dual duct, and/or fan powered terminal 

units 

ENVIRO-TEC 33


NOTES 


34 ENVIRO-TEC


NOTES 

ENVIRO-TEC 35

Printed on recycled paper 

Catalog: ET130.13-EG4 (1009) Supersedes: ET130.13-EG4 (908) 

© 2008 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA 

www.johnsoncontrols.com

CFR Series Fan-Powered, VAV Terminals, Catalog, ET130.13 ... - HTS

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